# Transverse waves and light

## Refraction of waves at plane boundaries

Refraction of waves at plane boundaries When straight waves pass from deep to shallow water, their wavelength becomes shorter. Both the long and the short waves, however, appear at rest when viewed simultaneously through the stroboscope. This shows that, although the wavelength }, has altered, the frequency, f, has remained the same. Now, since the velocity, v = …

## Reflection of straight and circular waves

Reflection of straight and circular waves Using the straight dipper, parallel waves are set up and reflected from a plane metal strip stood upright in the water to act as a reflecting surface. Various angles of incidence should be tried. Fig. 26.4 (a) shows the wave pattern obtained for an angle of incidence of 45~. Note that the …

## To study water waves with a ripple tank

To study water waves with a ripple tank A ripple tank for showing the properties of water waves comprises a shallow transparent tray of water with a point light source above it and a white screen on the floor below (Fig. 26.3). Before adding the water the tray is levelled with a spirit-level to ensure a uniform water …

## Water waves and light waves

Water waves and light waves On page 226 we mentioned the opposing views of Sir Isaac Newton and the Dutch scientist Christian Huygens regarding the nature of light. We shall now describe some experiments with water waves which show that, in some ways, their behaviour bears a striking resemblance to that of light. Afterwards we shall deal …

## To construct a transverse wave model

To construct a transverse wave model Much useful information about wave motion may be gained by constructing the wave model illustrated in Fig. 26.2. A series of strips, 2.5 mm wide are shaded alternately in pencil or colour on a piece of drawing paper or thin card. A wave curve is then cut out of a longer …

## Transverse waves

Transverse waves Probably everyone has, at some time or another, thrown a stone into a pond or other smooth sheet of water and noticed the circular ripples which spread out from the spot where the stone entered the water. These ripples are an example of a wave motion travelling over a circular wavefront. A somewhat simpler type …

## Transverse waves and light

Transverse waves and light In this chapter we shall deal with the experimental study of wave motion with special reference to the properties of water waves and light waves.