When light hits the boundry between mediums it will either reflect or refract (bend towards the normal).
Internal resistance can be found by taking the magnitude of the gradient of a Current (x-axis) Potential difference (y-axis).
At two points seperated by half of a wave lenght the displacement is in opposite direction to each other.
An ultraviolet photon has more energy than an infrared photon.
When the temperature decreases on a negative temperature coefficient thermistor the ammeter reading will decrease.
Potential difference (v) can be writen as J A-1 s-1.
When two wave crests meet, the aplitude is equal to the sum of the aplitudes of both waves.
When a wave is diffracted as it passes through an opening in a barrier. The amount of diffraction that the wave undergoes depends on both the wavelenght of the incident wave and the size of the opening.
The cross-sectional area of wire X is twice that of Y. The drift velocities of the electrons in these can be represended as vx and vy. The value of vx/vy is equal to 1/2.
Diffraction of light passiing through a narrow opening provides evidence that light has a wave nature.