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Lagrangian Points

A great explainer about Lagrangian points

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Hits: 5106


Conjugate Points

The object point and image piont of a lens system are said to be conjugate points.

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Hits: 3226

Boiling point

A simple description of what boiling points are, and how they vary according to pressure.

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Hits: 2928

This link has been reported hyperphysics

Focal Length

For a thin double convex lens, all parallel rays will be focused to a point referred to as the principal focal point. The distance from the lens to that point is the principal focal length f of the ...

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Hits: 1851

Saturated vapour pressure and boiling point

Uses kinetic theory to explain the boiling point of water and how it can vary.

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Hits: 4732

Interference between two waves (point source)

This java applet let you play with two point sources and watch the effect of interference. Wavelength can be changed and path length is shown.

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Hits: 4510

This link has been reported hyperphysics

Boiling Point

The boiling point is defined as the temperature at which the saturated vapor pressure of a liquid is equal to the surrounding atmospheric pressure.

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Hits: 5650


The points where the ecliptic crosses the equatorial plane of the celestial sphere are called equinoxes. On those dates there are 12 hours each of daylight and dark.

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Hits: 1499

Distance Relationship

What is the distance between two points and is a straight line the shortest root?

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Hits: 2372

This link has been reported

How Sunglasses Work

A good article with several pages covering various points on different types of sunglasses including polarised glasses.

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Hits: 9077


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