Which of the following is a wavelength corresponding to visible light?

My laser pointer emits green light, at a wavelength of 532 nanometers. What is the frequency of this radiation?

If we focus a laser beam with a lens, the size of the focal spot is determined by:

Which of the following is the best summary of the Heisenberg Uncertainty principle?

A key distinguishing characteristic of every semiconductor is:

An electron and hole orbiting each other in a bound state is called:

It is possible to engineer the quantum states of a semiconductor structure in order to trap particles in one dimension, leaving them free to move in the other two. What is that structure called?

On which of the following objects would it be impossible to have a plasmon?

Which of these is an example of a naturally occurring material which exhibits negative refraction?

A metamaterial is a material which is composed of an array of artificial elements. To have interesting properties at a wavelength lambda, these elements typically have a size of: