8 Questions
Which type of cells are used for night vision?
Rod cells
Where are cone cells mainly concentrated in the retina?
Fovea
What colors of light are cone cells sensitive to?
Red, green, and blue
Which phase change requires an addition of energy?
Boiling
What is specific heat 𝑐 defined as?
The amount of heat energy required to increase the temperature of a unit mass of a substance by one degree Celsius
What happens when Q and ΔT are negative?
Heat leaves the object and its temperature decreases
Which substance has a higher specific heat: water or copper?
Water
What does the term 'phase' refer to?
A specific state of matter, such as solid, liquid, or gas
Study Notes
Cells and Vision
- Rod cells are used for night vision.
- Cone cells are mainly concentrated in the fovea, a central part of the retina.
Cone Cells and Light Sensitivity
- Cone cells are sensitive to red, green, and blue colors of light.
Phase Changes and Energy
- The phase change from solid to liquid or liquid to gas requires an addition of energy.
Specific Heat
- Specific heat (𝑐) is defined as the amount of heat energy required to raise the temperature of 1 gram of a substance by 1°C.
Heat and Temperature Change
- When Q (heat energy) and ΔT (temperature change) are negative, the system is losing heat and its temperature is decreasing.
Specific Heat of Substances
- Water has a higher specific heat than copper.
Phase Definition
- The term 'phase' refers to the state of matter, such as solid, liquid, or gas.
Test your knowledge of the human eye's photoreceptor cells with this quiz. Learn about the differences between rod and cone cells, their distribution in the retina, and their roles in vision.
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