Exam: GRE (Verbal)

Definition: The ability of a material to change its color or transparency when exposed to light, especially sunlight, and then return to its original state when the light is removed.

Example: Photochromism allows sunglasses to darken in bright sunlight and become clear indoors.

Definition: Relating to a material that conducts electricity better when exposed to light.

Example: The photoconductive material is used in solar panels to convert sunlight into electricity.

Definition: A flow of electric charge that is generated when light hits a special material.

Example: The photocurrent increased significantly when the light intensity was raised.

Definition: A device that senses and measures light or other forms of electromagnetic radiation.

Example: The photodetector is essential for capturing images in digital cameras.

Definition: A small electronic device that converts light into electrical current, often used in sensors and optical applications.

Example: The photodiode is used in the camera to detect light and help capture images.

Definition: To break down a molecule into smaller parts using light energy.

Example: The chemical reaction will photodissociate the compound when exposed to ultraviolet light.

Definition: Relating to the use of light to enhance effects or induce reactions, particularly in medical treatments like destroying cancer cells with light-sensitive dyes.

Example: The photodynamic therapy used in her treatment helped to target the cancer cells effectively.

Definition: Relating to the electrical effects that occur when light interacts with certain materials.

Example: The photoelectric effect is a key principle in the operation of solar panels.

Definition: An electron that is emitted from a material when it absorbs light or other electromagnetic radiation.

Example: When light hits the surface of the metal, a photoelectron is released.

Definition: Relating to electronic devices or effects that are influenced by light.

Example: The photoelectronic sensor detects changes in light levels to adjust the camera settings automatically.