4 jaw-dropping things that happened when no one was watching

Cameras are everywhere these days. So things that would have been missed in the past are today more likely to be caught on camera.

Things like:

1. Deer sometimes like to stand up when no one’s looking and have bouts of fisticuffs.
DeerStandUpWhenYoureNotWatching

2. A couple weeks ago in Connecticut, a police officer’s private vehicle was vandalized… By a miniature tornado that blew into a crowded parking lot, ripped off one mirror from one car, kicked it around the lot, then laid it back down right beside the vehicle. Some people think it’s a ghost.

3. …Bears secretly dream of becoming pole-dancing strippers? (Skip to about 25 seconds in, and it gets better and better from there).

4. Lastly, as I posted before, in the past few months the world learned that asteroid impacts are more common than we ever thought before. This is bizarre, but it has always been this way: Huge rocks can at any moment fall out of the sky and blow up with the power of a nuclear bomb while still in the air… or cause devastation if they actually hit the ground. A team of scientists examined records from monitoring devices that listen for actual nuclear blasts, and they found about 60 blasts since 1990 that could only have been major asteroids exploding in the atmosphere. Despite the Earth’s 7 billion people, most of the planet’s surface is still uninhabited and we just don’t see most of what’s going on.

Every breath you take holds a piece of a nuclear bomb.

Port_wine_Wikipedia

If an old bottle of wine has no cesium-137, it’s probably from before the first nuclear reactor was built in 1942. (image source)

Today, it’s possible for wine experts to tell just how old a bottle of wine is by measuring the amount of radioactive material in the bottle. Traces of all the atomic bombs ever detonated still linger, scattered everywhere on Earth.

The atomic bombs dropped on Japan in 1945 wiped out whole sections of two major cities and poisoned the area for decades.

Those bombs produced an isotope called cesium-137, which had never existed on Earth before. Today, there’s a little bit of cesium-137 everywhere. Most of the cesium comes from the more than 2,000 nuclear bombs that have been detonated in the years since the bombing of Japan. The tiny traces that are now everywhere aren’t enough to be harmful, but in high concentrations cesium-137 can do awful things to you and your children.

So far 8 countries have detonated nuclear bombs to test different designs and also because they like to watch stuff go boom. One American test in 1962 was undertaken to see if we could use a thermonuclear bomb to blow a big hole in the ground. Success! Mildly poisonous Sedan Crater is now on the National Register of Historic Places.

SedanPlowshareCrater_Wikipedia

It’s hard to get a sense of the scale of Sedan Crater, but looking at the roads in the lower right gives an idea of its size. (image source)

The point of the test was to see if nuclear bombs could be used to excavate large areas of land to aid in mining efforts. Unfortunately, it was useless for mining and it also blasted radiation across the United States and exposed 13 million people to its effects (which were luckily fairly mild). That was the end of Operation Plowshare, America’s alternative-uses-for-nukes program.

The USSR had more stick-to-it-iveness and continued blowing nuclear holes in the ground until its demise. The Soviet program was called Nuclear Explosions for the National Economy, or NENE (an acronym which I’m sure is pronounced “ninny.”)

Everyday weirdness: Candy sparkles. Scotch tape can shoot X-rays.

There’s something nobody understands very well: Certain types of crystals like sugar will shoot light when they’re crushed or stressed. They call it “triboluminescence,” but just giving it a name doesn’t give a real explanation.

Every time you crunch on WintOGreen Lifesavers, (or just sugar cubes) they’re giving off little sparks inside your mouth. You can see it best if you let your eyes adjust to darkness and crush the candy with pliers. I did this with my nephew once.

The Ute Indians (who Utah might be named after–nobody’s sure) have an ancient tradition of doing ceremonies that use the triboluminescence of quartz crystals encased in translucent buffalo hide.

Certain kinds of tape also glow when you peel off a strip. You never notice in ordinary light, but do it in the dark and you’ll see something a little like lightning. If Scotch tape is peeled off inside a vacuum, instead of blue light it generates X-rays–enough to show the bones of your hand.

For light, time doesn’t exist.

Wikipedia-SunBehindCloud

From the perspective of a ray of sunlight hitting your eye, it reaches you at the same instant it was born on the sun.

We see it taking 8 minutes to reach us, but relativity means that from the photon’s “point of view,” zero seconds have passed.

Einstein figured out that time isn’t the same for everybody.  As something (like a spacecraft) speeds up, time slows down for it.  At the actual speed of light, time doesn’t pass at all.

So if you actually reached the speed of light, you would experience no time at all until you reached your destination.

(Small problem: It’s not possible for anything that has any weight at all to reach light speed.  Light can travel at that speed because it has no mass.)

Still, it means that (at least in a sense) light is always teleporting, reaching its destination in the same moment it departed. All the light you’ve ever seen has done this.

Space movies often have people traveling faster than light.  They gloss over the fact that being able to do that would also necessarily mean being able to move backward in time.

Why a goldfish appreciates art more than you do

The link: The Perfect Yellow, and more

The Story:

There are colors we can’t see.  All around us, every day we’re missing out on something that certain other members of the animal kingdom take for granted.

Just like dogs can hear sounds outside our range of hearing, animals like birds and the boring old goldfish can see colors beyond what’s visible to us.

In terms of the full spectrum of light, we’re practically blind.  The light that’s visible to us is a tiny part of what’s out there.

Electromagnetic radiation

From ultraviolet to visible light to radio waves, they’re all different kinds of the same thing.

Some of the birds you see outside might look drab, but actually have brilliant colors in the part of the spectrum beyond what we can see.  They’re seeing something we can’t even imagine.

The NPR show RadioLab has an awesome story on this unseen rainbow.

Key points are:

  • An American scientist, Jay Neitz, has succeeded in giving the ability to see the color red to an animal formerly unable to see it.
  • He’s working on ways to bring color to colorblind people.
  • Neitz also says it might be possible to give people the ability to perceive colors beyond the normal human range.
  • But there may already be such people in the world.  There are some rare women (normal-looking mutants called tetrachromats) who were born with extra color receptors in their eyes, enabling them at least in principle to see extra color.

The Internet has allowed the discovery of such people to happen.  Before, it was much harder for researchers to connect with the small percentage of the population with this genetic variation.  British neuroscientist Gabriele Jordan has been searching for such people for two decades.  If you think you might be one, and ever plan to be in England, you can contact her.

Megan Arquette is a blogger and possible tetrachromat who was featured on a Japanese science show earlier this year.

Another is an Australian artist named Concetta Antico, whose genetics Jay Neitz is studying.

Study of tetrachromacy is still in its infancy.  Someday within our lifetimes, it may be possible for ordinary people to see what’s been right in front of us all along.  The limits of our perceptions represent a clear and definable limit to the human imagination. You can’t imagine what a bird sees any more than a congenitally blind person can imagine the color blue.

But we’re beginning to push those limits.

What’s Einstein doing under your nose?

Public Domain art from NASA

There’s more than 2 dozen of these machines zipping around the Earth like a giant diagram of an atom, moving so fast it bends space and time.  (image source)

The link: Every day, people rely on Einstein’s time-warp equations without even thinking about it.

The story:

I’m Jay Knitig.  (It’s pronounced “Kinetic.”)  I’m a student at Wichita State University.

What I’m doing here is exploring the awesomeness of everyday life.  Our world is full of amazing things we usually don’t think about or even notice.

The wonders of science are right under your nose.  For example: Albert Einstein’s theory of relativity is abstract and hard to understand, but without realizing it you probably use it in everyday life.  It says that time and space aren’t the same for everyone: Time passes slower the faster you go, and things get smaller.

They don’t just seem smaller and slower, they actually are smaller and slower in your frame of reference.  It’s true for you but something else is true for them.  If one person is traveling at nearly light-speed and another isn’t, they could disagree about which of two events happened first, and both be right.  That’s relativity.

If you have a smartphone, it probably has GPS.  Even if you don’t, a lot of the trucks that deliver stuff to the stores you shop at use it.  GPS relies on a “constellation” of satellites that constantly zoom around the Earth at about two and a half miles per second triangulating with other satellites and your device on the ground.  At that speed (still a tiny fraction of light speed), time has actually slowed down a little for the satellites.

The GPS system people use every day employs Einstein’s time-bending equations to make up the difference.  Without Einstein’s equations, GPS couldn’t work.

Everyday life is full of awesome mind-boggling things just like that.  There are crazy, wonderful things all around us.

You have Einstein right under your nose.