Exam: Cambridge English: C1 Advanced (CAE)

Definition: Relating to the chemical processes that occur when light interacts with substances.

Example: The photochemical reactions in plants are essential for photosynthesis.

Definition: In a way that relates to the chemical reactions caused by light.

Example: The plants grow photochemically, using sunlight to convert carbon dioxide into oxygen.

Definition: A scientist who studies the chemical effects of light and how it interacts with different substances.

Example: The photochemist conducted experiments to understand how sunlight affects plant growth.

Definition: A branch of science that studies how light affects chemical reactions and processes.

Example: Photochemistry plays a crucial role in understanding how plants convert sunlight into energy during photosynthesis.

Definition: Relating to a substance that can change color when exposed to light.

Example: The photochromic lenses in my glasses darken when I go outside.

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: Able to be broken down into smaller parts by the action of light, often referring to materials that can decompose when exposed to sunlight.

Example: Many companies are now producing photodegradable bags to help reduce plastic waste in the environment.

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.