9.3 Interference

Only one laser can be used at a time to avoid overheating

Lasers must be of class 4 strength or below

Lasers must only be used in a room with a blackout blinds

Lasers must not be shone into anyone's eyes

The fringes increase in brightness by a factor of two as the diffraction pattern moves further away from the central maximum

The bright fringes become dimmer by a factor of  as the diffraction pattern moves further away from the maximum

The central maximum is brighter than the subsequent maxima by a factor of two

Each fringe has equal brightness and therefore equal intensity

An interference pattern created from a combination of interference through both a double slit and a single slit. 

An interference pattern that contains both constructive and destructive interference

A change in frequency of the incident light on the single and double slits

The phase difference that is calculated from the interference pattern at the first minimum

The number of primary and secondary maxima in each diffraction pattern is the same

The number of secondary maxima in the diffraction pattern is always one less than the number of primary maxima. 

The number of secondary maxima in the diffraction pattern is always the same as the number of slits in the diffraction grating

The number of secondary maxima between the primary maxima is always two less than the number of slits in the diffraction grating

Two slits created as two gaps within a material through which waves can be diffracted

A plate consisting of a very large number of parallel, identical, closely-spaced slits

A circular aperture through which light can be diffracted and then images resolved

A photographic filter that allows light in only one plane to pass through