Cleaner, more pure water backscatters light in the blue range, which makes it look blue. One famous example is Crater Lake in ...

Wavelength is also measured in metres (\(m ... although it is linked to both of these quantities. For water waves and sound waves the unit hertz is usually good enough but radio and TV ...

The equation needed when studying waves is: wave speed = frequency x wavelength. A ripple tank allows you to study transverse waves in water. Ripple tanks vary a lot in how they look, but usually ...