What do apertures do?

What do curved mirrors do to light?

What do filters do to light?

What is the equation for transmittance (t)?

what is the equation for Density (ND)?

What is the range in nm of visible light?

What is light defined by?

What is the speed of light in a vacuum?

What is the equation that determines the speed of light (v) in a material?

What are the two assumptions of GEOMETRICAL OPTICS?

How do you work out the sign of an angle?

What is Snell's law?

What is the critical angle?

When does total internal reflection occur?

What is the equation to find the power of a spherical surface?

How do you find curvature of a spherical surface?

What is the opening equation for paraxial ray tracing?

What is the paraxial refraction equation?

1. What is the lens equation?
2. What does it prove about paraxial images?

What is the paraxial transfer equation?

Does flipping a lens (horizontally) change it's power?

How many powers does a thick lens have?