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.

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