Understanding Light and Vision

Front

What did Plato believe about the origin of light?

Back

Plato believed that light originated in our eyes.

Front

What is the main idea proposed by Alhazen regarding light?

Back

Alhazen proposed that light is collected by our eyes.

Front

What revolutionary theory explains the dual nature of light?

Back

Quantum Mechanics explains the dual nature of light.

Front

How does light behave according to quantum mechanics?

Back

Light behaves sometimes as a particle and sometimes as a wave.

Front

What are objects that emit their own light called?

Back

Objects that emit their own light are called sources of light.

Front

What is the difference between a particle and a wave in the context of light?

Back

A particle is a discrete unit of energy, while a wave is a continuous oscillation of energy.

Front

What is the speed of light in a vacuum?

Back

The speed of light in a vacuum is approximately 299,792 kilometers per second (or about 186,282 miles per second).

Front

What is refraction of light?

Back

Refraction is the bending of light as it passes from one medium to another due to a change in speed.

Front

What is the role of the retina in vision?

Back

The retina converts light into neural signals that are sent to the brain for visual recognition.

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light when it hits a surface, while refraction is the bending of light as it passes through different media.