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Explore the Hidden World of Sand

John McPhee had a great New Yorker article (which I think was also in the collection Irons in the Fire), where he wrote about how U.S. geologists used sand found in the Japanese "Fu-Go" bombs that made it to the NW US to figure out their launch sites from specific beaches near Tokyo.

It starts on the 9th page here

https://gwern.net/doc/technology/1996-mcphee.pdf

4 hours agoblakesterz

I think the rotating photos create a poor UX. The purpose of this layout it seems is to let users view the images carefully and study the details, but the slideshow effect makes that difficult.

3 hours agoTechIsCool

I agree, furthermore the two dots at the bottom of each "slideshow" feel like poor design

Why overlay anything on top of something like that?

21 minutes agorichardkielbasa

From a casual browsing perspective, I liked it. However, it'd be nice to have it pause when you hover over one - or something like that. To get the best of both worlds.

2 hours agojhaile

I mean if your intent is to view the images carefully and study the details why not click through to the details page and see larger, more detailed photos?

an hour agoillumanaughty

Love this!

I've heard that desert sand is fundamentally smoother than beach or river sand. Would love to see some examples of non-beach sand side-by-side with these glorious samples.

3 hours agojonathaneunice

https://sandatlas.org/desert-sand/

Ask and ye shall receive.

3 hours agoobservationist

I would also like to see what happens if various types of sand are heated to various temperatures.

17 minutes agoamelius

FYI, in many countries and U.S. states, it's illegal to take sand from a beach.

Cool website though.

(Also, in many U.S. parks, it's illegal to take rocks, sticks, or other natural material.)

an hour agorationalist

That's a tad pedantic. Everyone takes sand from the beach. That's simply the nature of going to a beach. The spirit of those laws is to prevent people from taking large quantities of sand for some personal or commercial purpose.

31 minutes agokickopotomus

But is it legal to take a microscope to the beach?

an hour agorealslimjd

Not that I am aware of. I wouldn't suggest doing that in North Korea though (or possessing any type of scientific or other measuring instrument there).

The website shows pictures of the sand collection and the microscope. It does not appear to be at a beach.

an hour agorationalist

It would be nice if they included zoomed out pictures as well, is hard to tell what the beaches look like in person from the magnified sand.

an hour agobandofthehawk

If you click into one of the examples they have a photo of a hand holding a sample plus photos of the beach.

an hour agoillumanaughty

Well, here's a video which ends with a hand holding a sample.[1] It's a sand-making plant. Big rocks go in, and repeated crushing makes them into sand-sized rocks.

[1] https://www.youtube.com/watch?v=lVBiRPkQ0MI

14 minutes agoAnimats

I’ve had a sand collection for many years. I keep small vials on my shelf. From the Namib desert, to the slope of Mt Fuji, to Alaskan tundra. It’s a fun way to catalog places I’ve been.

2 hours agotechnothrasher

I come from a island where its common to pain with sand. About one hundred beach, around two hundred colors, green is hard to make.

I learned that local sand composition is very affected by local geology.

2 hours ago_ache_

I mean it makes sense that the sand is made of the same stuff as your local rocks, that's where it came from. Sure it washes around a bit in the surf but it's not like it's floating around the world on the ocean currents, at least not in massive quantities. I'm sure there are bits stuck in driftwood or whatnot but the vast majority should sink to the bottom.

2 hours agojandrese

This is just amazing to look at. Incredible, that there are shells as little as grains of sand.

These pictures would make great wallpapers.

2 hours agowafflemaker

I remember reading about a case where a murderer was tied to the crime scene just by analysing the quality of soil on his shoes.

It seemed far fetched then, but after seeing these pictures it really makes sense.

3 hours agomax_

This is fantastic! Excellent share. Though I object vigorously to its exclusion of any beach in California. Scandalous!

2 hours agoSegfaultSeagull

No sand from Brazil with such a huge coastline?

2 hours agometaltyphoon

Only one from Mexico, definitely need more.

2 hours agojolt42

I'm sure they'd be more than happy to use any samples you might want to go to the expense of acquiring and sending to them.

39 minutes agodylan604

Very neat, never thought about how different beaches are. Like the sites theme, easy to read as well.

3 hours agokalcode

I learned recently that white sand is mostly parrotfish poop... they eat coral and then it becomes sand

an hour agofunctional_dev

This is quality content! A peek into the real wonders of the world and not the usual opinionated slop we are getting way too used to.