What Color Is A Mirror?

Mirrors, reflection, colors...

 

Hewitt-Drew-it! PHYSICS 84. Reflection and Refraction of Sound

Acoustics of reflection, and explanation and applications of refraction.

 

INSIDE a Spherical Mirror

MIT 8.02 Electricity and Magnetism Lecture 31

Rainbows. A modest rainbow will appear in the lecture hall! Fog Bows. Supernumerary Bows. Polarization of the Bows. Halos around the Sun and the Moon. Mock Suns.

 

MIT 8.02 Electricity and Magnetism Lecture 29

Snell's Law, refraction, total feflection, dispersion, prisms, Huygens's Principle, the illusion of color, the weird Benham top, Land's famous demo.

 

Total internal reflection breakdown

This experiments show total internal reflection at the boundary between wax and air. When we place a drop of water at the surface the conditions changes and total internal reflection disappears.

 

The Most Sophisticated Mirror in the Universe

Hank summarizes the five reasons why infrared telescopes were supposed to be impossible to build, and then describes how a team of scientists and engineers overcame those obstacles to build the James Webb Space Telescope.

Other Sci-Show videos

Rainbows and Double Rainbows - Sixty Symbols

The physics of rainbows with Professor Mike Merrifield.

Other Sixty Symbols videos

 

Total Internal Reflection

Professor Bowley demonstrates a few tricks involving waves and prisms, with visible light and microwaves.

Other Sixty Symbols videos

Reflection from an impedance discontinuity

Two segments of the Bell Labs apparatus are connected. The segments have different impedance. When a pulse travels from high impedance to low impedance, it is reflected with positive polarity and transmitted with positive polarity. When a pulse travels from low impedance to high impedance, it is reflected with negative polarity and transmitted with positive polarity.

Source:  MIT TechTV

See other MIT physics demos

Fiber optic cables: How they work

Bill Hammack uses a bucket of propylene glycol to show how a fiber optic cable works and how engineers send signal across oceans.

Other "Engineer Guy" videos

MIT Physics Demo - Wave reflection

Pulses are created on the Bell Labs apparatus and reflections from the opposite end are observed. Initially, the ends of the apparatus are left open and the reflections have positive polarity. When one end is fixed, reflections have negative polarity.

See other MIT physics demos

Boundary Conditions on a String

If the end of the string is fixed (hard reflection), the reflected impulse is reversed. If the end of the string is free to move (soft reflection), the reflected impulse is not reversed.

Other animations by Penn State Schuylkill

Refraction and reflection of light

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 than air.

Other animations by Yves Pelletier

Disappearing coin (total internal reflection)