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How does a pinhole camera work?

Information on how pinhole cameras work and some useful links to related sites.

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http://www.howstuffworks.com/question131.htm

How red-light cameras work

The mechanisms behind the triggering of traffic red-light cameras, from Marshall Brain's HowStuffWorks.

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http://www.howstuffworks.com/red-light-camera.htm

$Refracted Light$

Refracted Light

Light travels at different speeds through different materials. When light slows down or speeds up, it bends in a new direction. This bending of light is called refraction.

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$Visit Refracted Light$

http://teacher.scholastic.com/lessonrepro/reproducibles/refracted.htm

Make a pinhole camera

Instructions on how to make a pinhole camera out of a pringles tube, and an explanation of how it works.

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http://www.exploratorium.edu/science_explorer/pringles_pinhole.html

Making a Pinhole Camera

Single page with clear instructions regarding the making of a pinhole camera.

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http://yn.la.ca.us/cec/cecsci/cecsci.01.txt

Speed of Sound Calculator

A simple program that allows you to calculate the speed of sound according to temperature and humidity and pressure.

Rating:

http://resource.npl.co.uk/acoustics/techguides/speedair/

Speedy Inventions

A lesson plan and worksheet. Pupils read a graph that shows how inventions dramatically changed transportation travel times through history. Speed can be calculated from distance and time. . ...

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http://teacher.scholastic.com/lessonrepro/reproducibles/profbooks/speedy.htm

Ole Christensen Roemer

Ole Christensen Roemer (1644 - 1710). In 1676, Ole Roemer made the first accurate measurement of the speed of light using Jupiter's moons. His estimate for the speed of light was 140,000 ...

Rating:

http://es.rice.edu/ES/humsoc/Galileo/Catalog/Files/roemer.html

Newtonian Mountain

Shows cannonball projected off mountain. Different speeds produce different results. I particularly liked the "touch" when the ball completed an orbit and returned to where it left the mountain!

Rating:

http://www.phys.virginia.edu/classes/109N/more_stuff/Applets/newt/applet.html

Straightforward, easy to understand answers to 13 frequently asked questions about the planet Earth. This site is plain, but coherent and factual presentation. (All distances and speeds quote miles ...

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http://teacher.scholastic.com/researchtools/articlearchives/space/earth.htm

Showing 1 - 10 of 19

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