This is really a lab that I have students do, but I am pretty sure they don't read this blog - so it is ok. If they are reading this, hi! We have these projectile cannons that shoot small balls. In ...

COMSTOCK PARK, Mich. — Meteorologists all over the world use a wide variety of instruments to measure things like temperature, air pressure, humidity and a host of other variables. In Tuesday's ...

A common refrain I am hearing from executives these days is that we have seen more change in the past six months than we have in the past six years. It is not just the magnitude of change; it is also ...

And that is absolutely 100% accurate, with no measurement errors. But Jack, I hear you say, what are you talking about? The reason we know that that's exactly the speed of light, is that we defined it ...

The first successful measurement of the speed of light took place in 1676. Danish astronomer Ole Rømer was trying to measure the orbit of Io, Jupiter's third largest moon, by watching how long it took ...

Astronomical measurements of motion frequently utilize the Doppler effect, observing shifts in wavelength (or frequency) of emitted waves from moving sources, analogous to a changing siren pitch.