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Day 1 - 80 Click on the graph to see what happens.

Since 50% of the photons from the laser will pa...

So, putting it all together, if light behaves l...

The Luge track

Observe an Iridium Satellite Flare

So, let's move the student farther away.(Click ...

Deep inside some stars,the conditions --- tempe...

Now, watch again as I put one of the little pha...

(Click the image below to watch Red-Navy-time m...

Detecting gravitational waves

To make things EVEN simpler,let's assume that t...

Shooting a hockey puck

For example, consider a ball rolling towards a ...

Copyright © Michael Richmond.This work is licen...

Day 401 - 500 Click on the graph to see what ha...

Now, what happens if we watch the ropeover a lo...

Click on each picture to see an animated sequen...

Enhancing Strategic Discourse Systematically us...

The other half of the time (25% overall), theph...

I've exaggerated the actual shifts by a factor ...

What happens is that a small section of the pla...

Tools: Geometry and Time

The spherical mini-waves expand outward and ove...

Measure the Earth's Radius with a Stopwatch

Copyright © Michael Richmond.This work is licen...

slow version of animated HR diagram fast versio...

It might help to answer a few simple questions....

Animation courtesy of The Virtual Telescope Pro...

Click on the picture above to blink the two ima...

Now, watch again as I put one of the little pha...

Here are the ships of the Red Fleetwhich happen...

Now, suppose light acts like a wave instead.If ...

All the waves we've seen so far havenot moved.W...

Joe then hops onto the Green Navy ship Green Fl...

Look at the time between two successive peak po...