Exam: Cambridge English: C1 Advanced (CAE)

Definition: Able to absorb and utilize light, particularly for sensing or detecting light.

Example: The photoreceptive cells in the retina help us see in different lighting conditions.

Definition: A type of cell or structure in the body that is sensitive to light and helps in the process of vision.

Example: The photoreceptors in the retina convert light into signals that the brain can understand.

Definition: A chemical reaction where a substance gains electrons in the presence of light.

Example: Photoreduction is an important process in photosynthesis, allowing plants to convert light energy into chemical energy.

Definition: A special type of film that changes when exposed to light, used in making patterns on surfaces like semiconductor chips.

Example: The engineer applied a layer of photoresist to the silicon wafer before etching the circuit design.

Definition: Having an unusual sensitivity or reaction to light.

Example: Some people are photosensitive and may experience discomfort in bright sunlight.

Definition: Describing something that has become sensitive to light, often as a result of a chemical process.

Example: The photosensitized material reacted strongly when exposed to sunlight.

Definition: To make a substance sensitive to light, often used in scientific or medical contexts.

Example: The researchers photosensitized the cells to study their reaction to light exposure.

Definition: A substance that becomes reactive when exposed to light, often used in chemical reactions to produce a desired effect.

Example: The researchers used a photosensitizer to enhance the efficiency of the solar cells.

Definition: The outer layer of a star that gives off light, particularly the sun.

Example: The photosphere of the sun is where sunspots can be observed.

Definition: Relating to the visible surface of a star, especially the sun, where light is emitted.

Example: The photospheric temperature of the sun is about 5,500 degrees Celsius.

Definition: A substance produced by plants during the process of converting sunlight into energy, which is used for growth and development.

Example: The plant stored the photosynthate in its roots for later use.