Wow ...

sunny-dave | 10:05 Sun 03rd May 2015 | ChatterBank

10 Answers

... I have no idea about the physics behind this - but it makes me go 'WOW'
.

https://www.youtube.com/watch?v=uENITui5_jU

The Night Night Songs

Sunday Caption Comp

Answers

1 to 10 of 10

Best Answer

No best answer has yet been selected by sunny-dave. Once a best answer has been selected, it will be shown here.

For more on marking an answer as the "Best Answer", please visit our FAQ.

mrs_overall

Fascinating!

gness

That is just beautiful...when you've sussed it out will you come and make one on my patio please.......the reverse one would be great...especially when guests have had a glass or two.....x

rockyracoon

That's very good, particularly the reverse one.

Svejk

That's quite weird, alright. Can't think of a caption though.

tonyav

Blimey thats great. gawd, gotta go for a wee.

Lie-in King

Brilliant, thanks Dave! :-))

DTCwordfan

everything has a natural frequency and when you have two that match up, then you can get this oscillation effect. It's why soldiers are made to break rank when marching over a bridge......