Using giveaways as a tool in science communication. Post #2: Designing the actual giveaway

Many big research projects and institutions regularly spend a lot of money on things like pens, mugs, canvas bags, or even pool noodles (I kid you not, one of my former employers did that!), all typically branded with the institution’s or project’s logo, that they give away in large quantities. Many of those are certainly useful and others funny. But since they are already budgeted for, anyway, why not use them as a tool in science communication?

For part 1 on what the literature tells us about giveaways, check out this blogpost

Part 2: Design criteria for giveaways

Let’s assume you’ve gone through the three basic scicomm questions and know your goal, your audience, and your message:

1) Why do you want to give away a giveaway? Your goal.

2) Who do you want to reach and how will you reach them? Your audience.

3) What do you want people to take away from your scicomm activity? Your message.

Now how do you now come up with a good giveaway? I have collected a bunch of points that I think are helpful to consider in this context.

Combining the verbal message with a physical object

While giveaways don’t have to be physical objects, let’s assume that that’s what we want to give away, so people have something to take home with them, to look at, to use, to remind them of your scicomm activity or support them when engaging with your topic. So first, let’s think about what images come to mind that are relevant for your topic, then look at functions that might be connected to what you are doing.

Considering shapes / forms / images / …

It’s likely that some thought has already gone into creating a logo for your project, or an acronym, or a key visual, or some sort of visual representation. But that doesn’t mean you have to stick with that; and if there isn’t anything like that — now is your chance to come up with something!

Rapid ideation is a method that works well to come up with shapes related to a message: Come up with 30 different ideas for shapes or symbols related to your message, even if you don’t immediately see how they can be converted into a giveaway. Write them down, don’t stop before you have a list of 30! It’s amazing what you come up with once you get over the slump that happens after you’ve initially run out of ideas.

Considering functions

Now this is what I think of as the fun part: Combining the functionality of whatever object you decide to give away with the message. Or rather the other way round — figuring out what functionality would work well to remind people of your message.

For me, this leads to two main questions to ponder:

In what context do you want the recipients to be reminded of your message?

Depending on your goal, your audience and your message, you might want to bring it back to people’s attention at very different times.

Going back to the fish example of the previous blogpost, you might want to remind people of what fish to buy when they are out shopping, or maybe when they are at home, thinking about what meal to cook the next day, or maybe even when at the office, planning tonight’s dinner. For each of those cases, you would use different physical objects as your giveaways (and which one you end up choosing should really depend on good research about your audience so you know they will actually use the giveaways in the way you envision).

Here are a couple of examples (and there are probably tons more if you actually think about it): If you want to remind people of your message while they are at work, it might be a good idea to use office supplies, desk helpers, USB sticks, coffee mugs — objects that people regularly use at work. But remember, the assumption here is that this is when they make decisions about what fish to buy! If you think it’s more likely that those decisions happen when people are out, shopping, then using coin purses or those coin holders for trolleys or even canvas bags might be a better choice. And while fish-related cooking utensils are a cute idea (don’t you love kitchen gadgets??), it’s probably not the best timing for your scicomm, because the fish has already been bought at that point.

Another approach is to think about functions that are related to the message itself, not the time when you want to remind someone of the message:

What are functions related to the content of your message?

I’ve been thinking about this in the context of two collaborative research projects people at my old job were working with, one on magnets and one on materials changing properties with changing temperature. Both of those have cool applications that can easily be used in scicomm.

The one with the materials that change properties can do really cool things related to for example colors changing depending on temperature: there are all these cool “thermometers” like color-changing ducks that tell you the temperature of your bath, eggs that change color and tell you whether your eggs are soft- or hard-boiled, mugs that display different images when the contents are hot then if they are cold, or — my personal favourite — mood rings (!!!). Or if you want to make it about light changes rather than temperature changes, you could do these indicator strips for UV light that tell you when to apply sunscreen, color-changing nail polish (this actually exists!), fairy lights with sensors that come on when it gets dark, … All of these things show versions of what the research project is all about, and make great giveaways that can either raise interest or remind people of having been engaged in some scicomm related to that topic.

The collaborative research project that is all about magnets, on the other hand, could use anything related to attaching things to metal, pattern of iron filings in a magnet field, these little boards that kids have that you can draw on with a magnet.

While both of these projects have a very applied topic, but if your project was, for example, on salinity in the ocean, maybe consider nautical-themed a salt shaker branded with your project’s logo or a slogan that relates a number of shakes per cup with ocean salinity in different oceanic regions? (Now I want to design a giveaway for a project on ocean salinity just because I want to play with salt shaker ideas!!!)

Moving forward with your idea…

…is what we will be talking about in tomorrow’s blog post, that provides a checklist of things I like to make sure I have considered before committing to a specific giveaway, and then some logistics stuff to keep in mind. Stay tuned! :-)

Using giveaways as a tool in science communication. Post #1: What the literature tells us

Many big research projects and institutions regularly spend a lot of money on things like pens, mugs, canvas bags, or even pool noodles (I kid you not, one of my former employers did that!), all typically branded with the institution’s or project’s logo, that they give away in large quantities. Many of those are certainly useful and others funny. But since they are already budgeted for, anyway, why not use them as a tool in science communication?

Part 1: What the literature tells us about giveaways — and how I think that applies to science communication

What eactly is a “giveaway”?

In the marketing literature, giveaways constitute the “low” end of the spectrum of corporate gifts, in contrast to high end gifts like holidays in the Caribbean or cars; “generally low value, high volume, less personal items that are used mainly to promote a company’s name” (Fan, 2006). They are used because verbal communication is easy to forget while gifts, branded for example with a company’s logo, serve as a reminder of that company, which may tip a business decision in that company’s favor (Axtell, 1990, in Fan, 2006).

Most research on corporate gifts is on very expensive gifts, like cars and Caribbean vacations, and therefore deals with legal and ethical concerns. I will ignore such concerns here because I am talking about the type of inexpensive giveaways that are customary in academia: Mugs, pens, hats, flash drives, stickers, all the stuff that you will be given at academic conferences, when visiting institutions, at open days or science fairs (it’s often the exact same items given to all the different audiences).

Goals of giving giveaways

Marketing literature tells us that depending on the stages of a customer relationship, giveaways typically serve different purposes. Arunthanes et al. (1994) describe business gifts as “means of promoting products and services by strengthening relationships with customers and suppliers“. They distinguish three categories of reasons for giving business gifts relating to a company’s relationship to their customers: initiating relationships, cementing relationships and quid pro quo.

Initiating relationships

When initiating relationships, the goal is to create a positive first impression in and relationship with potential new customers, extending a gesture of good will as basis for a positive future business relationship. Fan (2006) describes this goal saying that giveaways are “used mainly to promote a company’s name”, and Beltramini (1992) describes the goal as increasing positive customer perceptions toward key product attributes.

In a scicomm context, this could mean that you want to attract a new audience to your scicomm topic — kinda like I did when I used the opening of an art exhibition to talk about physics. I was first going to continue saying “… except we would be giving them some small physical object”, but we do not even need the physical component, even a social gift of spending time, building relationship, stimulating thought might be considered a giveaway.

Cementing existing relationships

When giveaways are used to cement existing relationships, they can be used to thank clients for positive past relationships, for placing a new order or for referrals to other clients. Marchand (2017) points out that sometimes repeated (instead of one-off) gifts for might be necessary to keep up customer loyalty.

In scicomm, this might mean keeping an existing audience interested in your scicomm topic, giving people who are already interested in your science something that reminds them of how interesting it is and that they can come back to you for more cool and fun and fascinating information and discussion and engagement. So anything that they will take home and that helps them continue engaging with your topic might be in this category, like the magnifying bug viewer that you showed kids how to use and that they continue using when out and about with their parents or kindergarden group.

Quid pro quo

In the quid pro quo scenario, a giveaway is given in the expectation that the favor will be returned by the customer through other means, for example increasing consumer’s in-venue spending through sports promotions (Yukse, Smith and McCabe, 2017), or because customers have come to expect receiving gifts.

This is what I would refer to as “buying attention” — I give you a giveaway, you give me your time. Maybe this is the really flashy gadget that you get so fascinated with that you don’t even realize you are in a scicomm situation? Or a booklet that captures people’s interest? In a way, the magnifying bug viewer is also a “quid pro quo” thing, I spend money to make you look at bugs (which is what I want you to do because it’s my area of interest and I want you to get excited about it).

Anyway. No matter the stage of the customer relationship, objectives of giving giveaways can be classified very broadly into three categories: Cognitive goals (you hope they will learn something, which could be evaluated by looking at reach of a campaign, awareness of a certain product, or knowledge), behavioral goals (you hope they will change their behaviour, which you would see for example in a number of hits or downloads), and financial goals (you hope they’ll give you money, evaluated for example by the return of investment, brand equity, …) (Cruz & Fill, 2008).

What makes a giveaway successful?

Since giving and receiving giveaways has become the rule rather than the exception, givers seem to evaluate giving giveaways as overall positive and worthwhile, i.e. the objectives seem to be achievable by giving giveaways. Investigations show that business gifts are generally effective in increasing positive customer perceptions toward key product attributes, especially in the case of the low-priced product lines (Beltramini, 1992). For sports promotions, Yukse, Smith and McCabe (2017) find that promotional giveaways increase consumers’ in-venue spending intentions. These effects are explained by the principle of reciprocity, which has its theoretical foundation in the exchange theory (Cropanzano & Mitchell, 2005).

Dimensions of gift design: gift type and gift relatedness

Marchand (2017) describes two critical dimensions of gift design: gift type and gift relatedness. Gift types can be described in the continuum from economic gifts (where the value of the gift is in the monetary value) to social gifts (where it is about the gesture, the connection, the feelings). Gift relatedness describes the closeness of the link between a gift and the gift-giver and their products and services. Gift-relatedness is high for a company’s own products, and low for other companies’ products.

Marchand (2017) recommends economic related (e.g., coupons) and social unrelated (e.g., unbranded chocolate hearts) gift designs over economic unrelated (e.g., coupons for products from other companies) and social related (e.g., exclusive events with company chairpersons) ones. However, even though social related gifts are generally not recommended, there might be goals for which they are still well suited. For example, if the goal is to learn the needs and problems of the client, to further client-seller relationships or to close a sale, lunch, evening meals, leisure activity or parties might help achieve just that (Arunthanes et al., 1994).

One example of a gift on the economic-related-to-economic-unrelated scale in a scicomm context are little business cards with key messages of a workshop that you hand out to participants (for example which fish to buy and which to avoid). If the card is branded with your institution, NGO, project, what have you, it would be a related. If you hand out a similar card that someone else made and branded, you might still be conveying the same message about what fish are good to buy, but you might at the same time be building up someone else as the trustworthy authority on fishing, rather than having people think of you as the authority because they saw your logo every time they were making decisions about what fish to buy.

On the economic-to-social scale, economic gifts in the sense that there is a large monetary value given are not common in academia (or at least I have never received or given any). Social gifts are more common — meeting with famous scientists, guided tours through famous institutions, that kind of stuff. But I feel like with scicomm giveaways, we’d be not in the extremes on either end of this scale.

Long-term effects

Depending on the goal, in order to achieve long-term effects, one-off gifts might not be enough. Repeated gifts for customer loyalty might be necessary, otherwise, the reciprocity process could wear out (Marchand, 2017).

For scicomm, I think this might not be the case as much. Giving people pens so they remember this one phone number for your taxi company might be helpful (I know it worked for me as a kid, when the pen next to the phone (which was still on a cord) had a taxi number on it, that was the one I would use), but for scicomm I would hope that people’s engagement would not depend very much on who gives the coolest gifts. On the other hand, occasionally reminding people of your cool topics would probably not hurt, either. But then it’s not so much about “loyalty” as of being on people’s minds, which can happen by means of giveaways, but also by many different means like for example a radio interview they happen to hear or a poster advertising your open house day.

Cultural context

Gift-giving is depending on cultural context, which can have a huge influence on how a gift is perceived depending on the timing, the monetary value of the gift, the way it is being presented, or even the colors used (Arunthanes et al., 1994; for a broad overview over gift-giving across cultures check out Giftypedia, 2013).

Cultural context is always important to keep in mind, especially working in international settings such as academia. So not surprising that it might be an important consideration when designing giveaways, but worth the reminder!

Giving through multipliers

Giveaways can develop both direct and indirect effects. In the same way that it often is a successful strategy in advertising to target children for products that parents will make purchasing decisions for (not only entertainment parks etc, but breakfast cereals, cars, …) it can be a strategy to not target an audience directly with your giveaway, but use other players to bring the message to your intended audience.

When the first level recipient is intended as multiplier, Berger & Schwartz (2011) find that while products that are cued more often were discussed more frequently, more interesting (or novel, surprising, original) products did not get more word of mouth overall.

This translates well to scicomm: If a topic is cued more often, it is likely that it will be discussed more. So make sure your giveaway is something people use daily and that makes other people comment on it!

The gift giver

Determining the “audience”, i.e. who you are giving your giveaway to, also includes determining who the gift-giver is (Cruz & Fill, 2008), since the same gift received by the same person can be perceived very differently on the context the gift-giver and the gift-receiver are in. It makes a big difference to the message a gift is sending whether the source of a gift are individuals or a corporation, i.e. whose relationship the giveaway-giving is supposed to influence. A paper clip branded with the logo of an institution might be taken as sign of appreciation when used on documents sent to a coworker at a different institution. The very same paperclip might not work at all when handed out as giveaway at a science day, even if the recipient is the same person in both these example

Design criteria for giveaways

Let’s assume you’ve gone through the three basic scicomm questions and know your goal, your audience and your message, which is what you should always do first:

1) Why do you want to give away a giveaway? Your goal.

2) Who do you want to reach and how will you reach them? Your audience.

3) What is it that you want people to take away from your scicomm? Your message.

Now how do you combine the message with a physical object? That’s a very good question that I will try to answer in my next blog post tomorrow :-)

Literature

Axtell, R. E. (1990). Do’s and taboos of hosting international visitors. Wiley.

Arunthanes, W., Tansuhaj, P., and Lemak, D. J., (1994) “Cross‐cultural Business Gift Giving: A New Conceptualization and Theoretical Framework”, International Marketing Review, Vol. 11 Issue: 4, pp.44-55, https:// doi.org/10.1108/02651339410069245

Beltramini, R. F. (1992). Exploring the Effectiveness of Business Gifts: A controlled field experiment. JAMS, 87-91

Berger, J., and Schwartz, E. (2011) ,”What Do People Talk About and Why? How Product Characteristics and Promotional Giveaways Shape Word-Of-Mouth”, in NA – Advances in Consumer Research Volume 38, eds. Darren W. Dahl, Gita V. Johar, and Stijn M.J. van Osselaer, Duluth, MN : Association for Consumer Research.

Cropanzano, R., and Mitchell, M. S. Social Exchange Theory: An Interdisciplinary Review. Journal of Management, Vol. 31 No. 6, December 2005 874-900 DOI: 10.1177/0149206305279602

Cruz, D., Fill, C. (2008) “Evaluating viral marketing: isolating the key criteria”, Marketing Intelligence & Planning, Vol. 26 Issue: 7, pp.743-758, https://doi.org/10.1108/02634500810916690

Fan, Y. (2006) “Promoting business with corporate gifts – major issues and empirical evidence”, Corporate Communications: An International Journal, Vol. 11 Issue: 1, pp.43-55, https:// doi.org/10.1108/13563280610643543

Giftypedia (2013); http://www.giftypedia.com/International_Gift_Customs (last accessed on xxx -> print relevant pages to pdf!)

Marchand, A., Paul, M., Hennig-Thurau, T., and Puchner, G. (2016). How Gifts Influence Relationships With Service Customers and Financial Outcomes for Firms. Journal of Service Research. 1-15. DOI: 10.1177/1094670516682091

Yukse, M., Smith, R., McCabe, C. (2018) Reciprocal Intentions: Effects of Promotional Giveaways on Consumers’ In-Venue Spending Intentions: An Abstract. In: Krey N., Rossi P. (eds) Back to the Future: Using Marketing Basics to Provide Customer Value. AMSAC 2017. Developments in Marketing Science: Proceedings of the Academy of Marketing Science. Springer, Cham

Wake comparisons: Row boat and motor boat

I just love this picture: The two boats in the front are going at the same speed (the trainer is driving right next to the person in the row boat over a long distance), yet look at how different the two ships’ wakes look!

The motor boat has this huge, breaking, turbulent wake. Even though it rides so high up in the water, it displaces a lot of water and creates a wake with a large amplitude (how large the amplitude is is visible in the picture below, where some poor people were sitting in row boats when a motor boat sped past. But also here: Look at how cool these feathery waves that constitute the wake look together!).

But then, going back to the original picture (which I am showing again below) — look in contrast at the row boat’s wake. You see the paired eddies where the oars were in the water, and you see a tiny little trail where the body of the ship went. But that’s all. Yet both boats are going at exactly the same speed! Pretty cool, isn’t it? (Also pretty scary how much energy the motor boat is spending on moving water and moving a larger hull and a heavy engine rather than just propulsion when the payload of both boats is more or less the same — one person)

Night swimming… or at least night-time wave watching

Looking at Kiel fjord in the picture below, it is quite obvious from the shape of the waves that those waves are some ship’s wake.

Why is that obvious? Because the waves a) have a very short wavelength for their height, and b) are also all of the same wavelength. What I mean by that is a) on Kiel fjord, if we see waves that high that are driven by the wind, their wavelength is a lot longer since the waves have been building up over a long distance. For short waves to display such an amplitude, the waves would have to run up a fairly steep slope which I know is not the case in this location (and which would also lead to two or three high crests in the shallowest part of the water, not to as many as far out as we see here). B) we don’t see a spectrum of wavelengths as we would expect in a wind-driven wave field. In fact, the water surface doesn’t display any ripples or other evidence of wind at all.

And what do you see when you look at water at night? :)

Roll waves in the sand dunes? Observing erosion

On our trip to the west coast yesterday, I observed something really cool: Sand roll waves (I think!) in the sand dunes!

But before I get to that, this is the setting on Sylt. A sandy beach opening up to the North Sea, that is separated from the land by sand dunes which are overgrown with some kind of beach grass.

Yesterday was a windy day as you see from the waves, but neither was the water level very high, nor was the wind anywhere near as strong as it gets here during winter storms, so the erosion happening yesterday is not very strong compared to what it is like during more extreme weather conditions (and the process I am focussing on here is probably one of the least important ones).

In order to prevent erosion of the dunes which protect the inland from storm surges etc, it is crucial that the beach grass growing on the dunes isn’t stepped on by the hundreds of tourists visiting this beach every day (probably thousands during summer). Therefore there are these wooden staircases installed in regular, short intervals to bring people across the dunes without them doing any damage to the vegetation.

Therefore, in most places, the dunes look like this.

In some places, though, there is little or no grass growing on the dunes, so imagine what kind of damage strong winds can do here, let alone a storm surge!

And in one of these open sand areas I observed what I think are roll waves. Do you see what looks like a drag mark a little right of the center in the picture below?

Check it out in the movie below (it zooms in after 5 seconds to show it more clearly) — there is sand surging down this track! To me this looks very similar to roll waves, and I know roll waves have been observed in sediment flows and lots of other places, so why not in the sand of these dunes? What do you think?

Wave watching from a train

You know how they say that the journey is the destination? That was certainly the case for my spontaneous mini-vacation yesterday (and how awesome is it that my #BestTravelBuddy is up for a cross country trip on a day’s notice?). We went all the way from the east coast to the west coast — which in Germany admittedly isn’t that terribly far — to visit the island Sylt in the North Sea for a day.

Even the train ride itself is spectacular, though, at least if you are as easily excited as we are. Wave watching from the bridge across the Kiel canal in Rendsburg (below): A super neat wake of the ship, showing the turbulent wake as well as the feathery V-shaped wake. And as you can see from the rows of foam on the water that are a sign of Langmuir circulation (more about that here): It was pretty windy, too!

But it got even better when we reached the west coast. This is my kind of train ride!

Below is a view of the dam that connects the island Sylt with the main land, and here again you see how windy it is, and this is in the lee of the island. In the lee of those shallow dams you see that it really doesn’t take long for the surface roughness to increase again.

So are you excited to see the wind-ward side of the island now? I’ll post some wave watching from that side soon, but I first have to wade through literally thousands of pictures to cut it down to a handful. I’m already down to about the 100 best, but now I can’t decide which ones to post, because I like them all…

But here is a picture of the train ride back. Do you notice how there are regions with really low surface roughness on either side of the dam, suggesting that this dam is sheltering the water surface from the wind in two directions? Of course it isn’t — it’s just ebb tide and the smooth surface areas towards the right of the dam are wet sand that look similar to a smooth water surface.

So that’s my wave watching from the train! Excited to go back soon! :-)

A different kind of drop photography today…

After all the professional drop photography I talked about yesterday, here is some of my own from a walk that I took after the amazing and slightly overwhelming experience of giving the laudation speech at the opening of an art exhibition.

Below, I really liked how the wave rings have such different sizes and amplitudes depending on whether they were made by rain drops or ducks (you might have to click the image to enlarge to see what I am talking about).

And below, I love so much about this picture. The long waves with the very small amplitude that are coming into Kiel fjord from some far-away storm. The short waves and small scale turbulence that is created where wave crests just manage to flood a step on the staircase, but the water then flows off it again during the next wave trough. The small speckles made by rain drops. The fact that it seems to almost be summer again because the beach chairs are back! And, of course, that I caught the splash and the flying drops of the wave.

I read this poem by E.E. Cummings on Saturday that really speaks to me. It ends in

“For whatever we lose (like a you or a me)
it’s always ourselves that we find in the sea”
E.E. Cummings

Vernissage of “liquid art”: The perfect opportunity to combine art & physics to do some scicomm!

If you don’t want to “preach to the choir”, how do you, as science communicator, reach new audiences occasionally?

One way that I tried today is to give the (invited, I swear!) laudation at the vernissage of Wlodek Brühl‘s exhibition on “liquid art“. The idea was that visitors would mainly come to the event because they are interested in art itself, but that I will try to give them a new perspective on the art by exposing them to the science behind it. Which I think is a pretty cool concept!

Yesterday, I got a sneak peek into the exhibition which features new art that isn’t even two weeks old! I took pictures of some of the art to show on this blog (with Wlodek’s permission!).

Let’s start with a sculpture that isn’t even part of the actual exhibition but that is displayed in my living room (and I love it!!!): A very simple drop sculpture. A drop fell onto a water surface. Due to surface tension, the water surface deformed, got pulled down, bounced back, overshot, and a drop shot up again, pulling a thin trail behind it. As the drop was flying upwards, it got hit by a second drop which fell straight on it. That second drop splattered into this umbrella, which is starting to disintegrate into small instabilities that form tiny filaments. A fraction of a second later and the whole thing would have collapsed and look totally different.

My picture of art by Wlodek Brühl, taken and published with kind permission.

That’s part of the art of capturing these sculptures: timing. Not only does one need to be super precise in the timing of drop releases, one also needs to capture the exact right moment to light the dark room with a flash, which is a lot shorter than the exposure time of the camera. Of course it’s all controlled by a computer!

But here is an impression of the exhibition itself.

My picture of art by Wlodek Brühl, taken and published with kind permission.

I’d like to start out with some of the older art from 2016 which is easier to explain: “Simple” drops like you see to the right of the door above, then double pillars to the left of the door, and then reflections, before we move on to the kind of art that you saw at the top of this post.

In the picture below, what happened is pretty similar to what happened in the picture above: A drop fell, bounced back up again and was hit by a second drop. The second drop hit the first one when that one was still fairly fast, therefore the vase-like structure. (And don’t you just love the waves that you see on the water surface? I feel like I see the actual dynamic process of the surface rising up!)

My picture of art by Wlodek Brühl, taken and published with kind permission.

Or below, another similar setup, except here the drops collided in such a way that the larger, bottom one formed an umbrella-like shape, whereas the upper one rose as a vase.

My picture of art by Wlodek Brühl, taken and published with kind permission.

It gets more complicated if two drops are released simultaneously as below, and then a third one hits them in the middle with a little time delay to form the umbrella, and a fourth drop is still falling down and hasn’t reached the sculpture yet.

My picture of art by Wlodek Brühl, taken and published with kind permission.

So much for the “simple” structures, now on to more complicated ones. The ones below are similar in their setup to the ones above, but now they are photographed against a black background and in a large, black dish. Therefore we see the reflection of the sculpture on the water surface. This lets us look at different structures within the sculpture from two angles, making it even cooler to think about all the physics going on here!

My picture of art by Wlodek Brühl, taken and published with kind permission.

But now on to stuff done with more fun toys:

These are the newest works of art that Wlodek did only within the last two weeks! I personally prefer the translucent, fragile, light sculptures like the one in my living room, but I can also really appreciate those bouquets of spring flowers for their dynamic and lively shapes.

My picture of art by Wlodek Brühl, taken and published with kind permission.

Below I am showing a larger version of the sculpture to the very right above. In these new sculptures, Wlodek isn’t “only” working with drops, but now he has started to incorporate colored jets that are driven up by pressurised air. See how the yellow central jet broke through the umbrella formed by the orange drop that dripped on it from above?

Additionally, Wlodek is building vases around the bouquets by pushing dyed water through a rotating turbine. This vase breaks up into tentacles when it gets unstable!

The sculpture below is called “sundae with umbrella” and I cannot un-see this!

My picture of art by Wlodek Brühl, taken and published with kind permission.

But mostly I see flowers, specifically orchids. Below, the yellow drop from the top didn’t hit the green-ish jet from below completely center, therefore the latter broke up and seems to be turning towards us, wrapped in the orangey-yellow vase that has become very unstable on one side, but not so much in the back. Don’t you just love how the rims bulge together due to surface tension?

My picture of art by Wlodek Brühl, taken and published with kind permission.

In any case, I had a blast, even though, judging from the picture below that shows me giving the laudation, it doesn’t seem like it. Do I always look this serious? But the feedback I got was that everybody enjoyed looking at Wlodek’s art through a physics lense, at least after they got over their initial shock that they would have to listen to physics on their artsy Sunday morning. So this is definitely a scicomm format I want to explore more!

Me (in stripes) with the artists Regine Hahn (left) and Wlodek Brühl, as well as the host, chairwoman of Kunstkreis Preetz. Picture by Frauke Voitle, used with permission.

Intriguing interference pattern of waves

Do you see those weird traces going away from us, perpendicular to the wave crests, but in parallel to the bright stripes on the sea floor (I talked about those in yesterday’s post), looking almost like waves but not quite? What’s going on there?

Something very cool! :-)

In the gif below, I have drawn in several things. First, in red, the “weird” tracks that we are trying to explain. Then, in green, the crests of two different wave fields that are at a slight angle to each other. I’m first showing one, then the other, then both together. Lastly, I am overlaying the red “tracks”.

So this is what those tracks are: They are the regions where one of the wave fields has a crest and the second one has a trough (i.e. where we are right in the middle between two consecutive crests). What’s happening is destructive interference: The wave crest from one field is canceled out exactly by the wave trough of the other field, so the sea level is in its neutral position. And the wave fields move in such a way that the sea level stays in a neutral position along these lines over time, which looks really cool:

Some more pics, just because they are pretty and I like how they also show total internal reflection :-)

And don’t you just love the play of light on the sea floor?

And even though these weird neutral sea level stripes are parallel to the bright stripes on the sea floor, I don’t think that the latter one is caused by the first. Or are they? Wave lengths seem very different to me, but on the other hand what are those stripes on the sea floor if they aren’t related to the neutral stripes in the surface??? Help me out here! :-)