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The phase difference between the red wave and the green wave is . . .

The phase difference between the red wave and the blue wave is . . .

Two waves which are phase coherent . . .

(2 answers): Two waves which are phase coherent . . .

The wavelength of violet light is . . .

Frequency is . . .

Violet light has a shorter wavelength than red light, so it has a . . .

(2 answers): The energy of a photon is . . .

Two photons with the same energy are necessarily . . .

The kind of radiation emitted by lasers is:

For an electron to jump from a lower energy level to a higher energy level, it must have energy equivalent to . . .

If an excited electron jumps down from a higher energy level to a lower energy level, it will emit a photon with energy equivalent to . . .

Both LiDAR and RADAR measure distance to an obstacle by measuring the time taken for a reflected wave to return to the source of the wave. If

d = distance to object in metres,

t = time from emission to detection of returning wave in seconds, and

s = speed of the wave in metres per second

then the equation for distance to the object would be:

Between LiDAR and RADAR which has better resolution?

Between LiDAR and RADAR which is cheaper?

Between LiDAR and RADAR which has longer range?

Between LiDAR and RADAR which one gets interference from rain and snow?

The sensor in autonomous vhicles to detect the position of obstacles and tell what they are is . . .

Look at the image. The two wave forms at the bottom combine to form the wave at the top. This is an example of . . .

Look at the image. The two wave forms at the bottom combine to form the wave at the top. This is an example of . . .

Supplants ordinary reality with a virtual space which you look around in and move in:

A general term which covers the other three:

Where virtual objects can (appear to) interact with real objects in the environment:

Where virtual objects appear to be in the real environment, but do not interact with real objects: