Tag Archives: Spree

Wave watching in front of the Reichstag. That’s my kind of sightseeing!

1 Reply

Did you notice that most tourist ships on the Spree in Berlin don’t actually have nice bow waves? Luckily I found one that does! (see above)

Because what then happens is that a nice wake develops, too. Below you see the turbulent wake right behind the ship, and the feathery V-shaped wake (with the ship at its tip) spreading out.

And what’s really cool is how that V-shaped wake gets reflected from the sides of the Spree, coming back towards the middle. Can you see the two wave fields?

And once they meet in the middle, you get a really cool checkerboard-like interference pattern!

And yes, that’s the German Parliament in the background…

Below, you see the wake of a coot (apparently, according to my dictionary. I will call it duck for now…).

And now the duck’s wake and a ship’s bow wave!

Do you make everything you see about your favourite topic, too? Then check out this month’s #scicommchall!

Sightseeing in Berlin? Any excuse for a #wavewatching trip!

3 Replies

Berlin is full of interesting history to discover … for example that of ships that have gone past on the Spree! :-D

Let’s start with some easy wave watching. In the picture above, you see a ship and its wake (both parts: the turbulent one where the ship has gone, and the feathery wake that forms the V with the ship at its tip). And you can make out the wake of a ship that has already gone round that bend of the Spree: the turbulent part showing a different surface roughness, and reflected remains of the feathery V on the right shore of the Spree. So far, so good!

Below, you see two turbulent wakes: The one of the ship you still see, and then the one of a ship that went the other way, but already went out of the area captured in the picture.

Berlin Cathedral Church seen from across the Spree

And here is a series where you see the feathery wake reach the side of the Spree…

Bode museum and television tower Berlin

…get reflected there…

…and then meet the reflection of the other side of the V to form a checkerboard pattern! Would you have known what’s going on here if you hadn’t spotted the ship just about to leave the picture, or seen the previous images?

Below is another nice one. What happened here? A ship sat there, waiting, and then started moving again right before I took the picture! This is the beginning of a turbulent wake right here.

Reichstag, home of parlament

And below another nice wake plus reflection.

And here you see another feathery wake, plus the turbulent wake of the same ship on the other side of the Spree.

Reichstag, home of parlament

Similar picture as above, except in a different spot…

German Chanellery in Berlin seen across the Spree

Yes, that’s a pretty good representation of what sightseeing trips with me are like ;-)