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World's Largest Recorded Earthquake

9.5 Magnitude - May 22, 1960 near Valdivia, Chile

 

World's largest earthquake - tsunami map: The Chilean earthquake produced a powerful tsunami that traveled at a speed of about 200 miles per hour across the Pacific Ocean. The wave killed 61 people in Hawaii, 138 in Japan, and 32 in the Philippines. The star marks the location of the epicenter, and the numbers on the contour lines are travel times in hours for the wave front. Image by NOAA.

 

 

largest-earthquake-tsunami-map-sm.jpg

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34 minutes ago, Pariah said:

 

World's Largest Recorded Earthquake

9.5 Magnitude - May 22, 1960 near Valdivia, Chile

 

 

 

 

 

largest-earthquake-tsunami-map-sm.jpg

 

One of the odd things about tsunamis is that their propagation speed depends on the depth of water they're traveling through: deeper water make for faster wave speed.  This is part of the reason the waves get taller (in terms of surface wave height) as they run up on shore: waves are catching up from behind as they approach the equilibrium shoreline.

 

I tried boiling down the relevant wave equations and expression for wave speed for my algebra-based physics class, and gave up; you need a prety sophisticated treatment.

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I always liked Air France's original logo: the Hippocampe Aile. You can see the logo in the final scene in Casablanca.

 

3779413e8f30a7b78a3c2972cf3521b5.jpeg

 

 

For some reason, I thought the logo belonged to BOAC, but that company's logo was actually the Speedbird.

 

Speedbird.png

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100 Photographs selected by Time.

 

Ordered strictly chronologically, many are famous, literally shaping how we see our world.  It'll take a while to step through all of them.

 

The first couple of images are there because they are the oldest instances of the art, but very shortly the pictures transcend mere technological novelty.  Some are nakedly powerful images, some are signposts of the last century and a half.

 

As an example ... the third or fourth one looks (to my jaded 21st Century eye) like a scene from the surface of Mars ... you'll be able to tell which one I mean when it pops up.  Look at it carefully for a while before you scroll down for the explanatory text, and see if you realize what it is.

 

It's a piece of battlefield of the Crimean War, and the round "stones" on the ground are

spent cannonballs.

 

Some are almost clichés, now, but others are things we don't think so much about; some from being long ago, some from being things we prefer not to think about, let alone see.  The last image is from 2004.

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