
did you know that margarine is grey, and that they dye it yellow to appear more like butter.
( ,
Mon 12 Mar 2007, 19:21,
archived)

Did you know that the speed of sound varies according to temperature?
It's 343 Metres Per Second at 20c:P
Making a 1kHz sine wave at 3.43 metres high.
( ,
Mon 12 Mar 2007, 19:23,
archived)
It's 343 Metres Per Second at 20c:P
Making a 1kHz sine wave at 3.43 metres high.