Exam: Cambridge English: C1 Advanced (CAE)

Definition: Describing an atom, molecule, or ion that has gained energy and become excited as a result of absorbing light.

Example: The photoexcited molecules reacted quickly with their surroundings.

Definition: To cause a substance to become excited or energized by light, typically in a scientific context.

Example: The molecules were photoexcited by the laser beam, leading to a reaction.

Definition: Relating to the study of geological features using photographs, especially aerial images.

Example: The photogeologic analysis revealed new insights into the landscape's formation.

Definition: The study of geological features and formations using aerial photographs.

Example: Photogeology helps scientists understand the Earth's surface and its geological history.

Definition: Relating to the technique of obtaining measurements from photographs, especially for creating maps or 3D models.

Example: The photogrammetric analysis of the landscape provided detailed information for the project.

Definition: The method of creating maps or drawings using photographs, particularly those taken from the air, to obtain accurate measurements.

Example: Photogrammetry is widely used in surveying and mapping to create detailed topographic maps.

Definition: Caused or activated by the action of light, especially in the context of electromagnetic radiation.

Example: The photoinduced reaction occurred when the light hit the chemical compound.

Definition: A process where light causes a change or effect in a material or system.

Example: The photoinduction process is essential in many biological and chemical reactions.

Definition: The process in which an atom or molecule loses an electron after absorbing light, resulting in the formation of ions.

Example: Photoionization is an important process in astrophysics and atmospheric chemistry.

Definition: To cause an atom or molecule to lose an electron due to exposure to light or electromagnetic radiation.

Example: The intense light from the laser can photoionize the gas, creating charged particles.

Definition: Describing something that has been affected or created by the process of photoionization, where light energy causes atoms or molecules to lose electrons.

Example: The photoionized gas emitted a bright glow when exposed to ultraviolet light.

Definition: To cause an atom or molecule to lose an electron due to the absorption of light or electromagnetic radiation.

Example: The gas was photoionized by the intense ultraviolet light from the star.