Danish Beach

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

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

The Luge track

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

Enhancing Strategic Discourse Systematically us...

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

Shooting a hockey puck

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

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

slow version of animated HR diagram fast versio...

Measure the Earth's Radius with a Stopwatch

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

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

Detecting gravitational waves

Tools: Geometry and Time

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

Animation courtesy of The Virtual Telescope Pro...

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

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

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

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

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

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

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

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

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

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

Observe an Iridium Satellite Flare

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

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

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

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

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

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

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