Definition: Relating to light or the part of water that sunlight can reach, allowing plants to grow.

Example: The photic zone of the ocean is where most marine plants thrive due to the sunlight.

Definition: The study or science related to light and its properties.

Example: Photics is an important field in understanding how light interacts with different materials.

Definition: A theoretical particle that is considered to be the superpartner of the photon, possessing a half-integer spin.

Example: In supersymmetry theories, the photino is predicted to exist alongside the photon.

Definition: The changes or damage to the skin caused by long-term exposure to sunlight and ultraviolet radiation, leading to issues like wrinkles and discoloration.

Example: Many people use sunscreen to prevent photoaging and protect their skin from sun damage.

Definition: A type of organism that can make its own food using light energy and inorganic materials. Examples include green plants and certain bacteria that perform photosynthesis.

Example: Green plants are photoautotrophs because they use sunlight to create their own food.

Definition: Relating to the study of how light affects living organisms.

Example: The photobiological effects of sunlight on plants are crucial for their growth.

Definition: A scientist who studies the effects of light on living organisms and biological processes.

Example: The photobiologist conducted experiments to understand how plants respond to different light conditions.

Definition: The branch of science that studies how light affects living things and their biological processes.

Example: Photobiology helps us understand how plants use sunlight for photosynthesis.

Definition: A type of cathode that produces electrons when it is illuminated by light or other forms of radiant energy.

Example: The photocathode is essential in devices like photomultiplier tubes, where it converts light into an electrical signal.

Definition: A device that converts light energy into electrical energy, often used in automatic lighting systems or solar panels.

Example: The photocell turned on the streetlights automatically at dusk.