Telescopes
This famous telescope, launched in 1990, has taken some of the most iconic images of the universe.
What is the Hubble Space Telescope?
This part of a microscope is the lens you look through.
What is an eyepiece, or ocular lens?
This quantity determines the color of laser light.
What is wavelength?
This law states that the angle of incidence equals the angle of reflection.
What is the Law of Reflection?
This manufacturing process uses a focused laser beam to permanently mark, engrave, or cut materials.
What is laser machining?
The James Webb Space Telescope's primary mirror is made of 18 hexagonal segments coated with this highly reflective material.
What is gold?
This type of microscope uses a beam of electrons instead of visible light.
What is an electron microscope?
The word LASER stands for "Light Amplification by Stimulated Emission of ____".
What is radiation?
This equation relates focal length, object distance, and image distance for a thin lens.
What is the Thin Lens Equation?
This industry uses optical fibers to transmit huge amounts of data as pulses of light.
What is telecommunications?
This type of telescope uses a curved mirror, rather than a lens, as its main light-gathering element.
What is a reflecting telescope?
This microscope uses visible light and multiple lenses to magnify a specimen.
What is a compound light microscope?
The first working laser, demonstrated in 1960 by Theodore Maiman, used a crystal made from this gemstone.
What is ruby?
This law relates the angles of incidence and refraction to the refractive indices of two materials.
What is Snell's Law?
This technology uses lasers to measure distance and build 3D maps and is widely used in autonomous vehicles.
What is LiDAR?
This telescope property determines how much light it can collect and is mainly set by the diameter of its primary mirror or lens.
What is aperture?
This microscopy technique uses fluorescence from specially labeled molecules to produce images.
What is fluorescence microscopy?
In a laser, this material provides the atoms or molecules that amplify the light.
What is the gain medium?
This law describes how light intensity decreases with the square of the distance from a point source.
What is the Inverse-Square Law?
This medical procedure uses a laser to reshape the cornea and correct vision.
What is LASIK?
According to the Rayleigh criterion, increasing the diameter of a telescope's aperture improves this ability to distinguish two closely spaced objects.
What is angular resolution?
Oil immersion improves resolution because the oil increases this optical property between the specimen and the objective.
What is the refractive index?
The two mirrors surrounding a laser's gain medium form this resonant structure that repeatedly reflects light through the medium.
What is an optical cavity, or resonator?
This law says that light traveling between two points follows the path that takes the least optical time.
What is Fermat's Principle?
This type of optical system inspects products on manufacturing lines using cameras and image processing.
What is machine vision?