Eye and Lens
Eye
Wednesday, December 23, 2009
Light , Reflection and Refraction
Refraction
When a ray of light reach the boundary between two different substances, some light is reflected, and some light is refracted. The semi-cylindrical piece of glass has a higher index of refraction.
Rainbow
Light refraction and reflection
Concave lens - physics experiment
Lens that possesses at least one surface that curves inwards. It is a diverging lens, spreading out those light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).
Converging lenses a beginners guide for A level
Lenses
When a ray of light reach the boundary between two different substances, some light is reflected, and some light is refracted. The semi-cylindrical piece of glass has a higher index of refraction.
Rainbow
Light refraction and reflection
Concave lens - physics experiment
Lens that possesses at least one surface that curves inwards. It is a diverging lens, spreading out those light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).
Converging lenses a beginners guide for A level
Lenses
Thursday, November 19, 2009
Magnetic effects
Magnetic effects
Magnetism 2
Electricity & Magnetism Hand Rules (part one)
What is the magnetic field?
Origin of Earth's Magnetic Field
Direct current electric motor
Magnetism 2
Electricity & Magnetism Hand Rules (part one)
What is the magnetic field?
Origin of Earth's Magnetic Field
Direct current electric motor
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