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

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

The Luge track

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

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

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

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

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

Measure the Earth's Radius with a Stopwatch

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

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

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

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

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

Observe an Iridium Satellite Flare

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

Animation courtesy of The Virtual Telescope Pro...

Enhancing Strategic Discourse Systematically us...

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

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

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

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

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

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

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

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

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

Detecting gravitational waves

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

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

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

slow version of animated HR diagram fast versio...

Tools: Geometry and Time

Shooting a hockey puck

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