Paul Sutter is an astrophysicist at The Ohio State University and the chief scientist at COSI Science Center. Sutter is also host of the podcasts Ask a Spaceman and RealSpace, and the YouTube series ...

The pupillary distance (PD) measurement is a requirement for people who want to purchase eyeglasses. Here, find out how to measure your PD using a mirror and a ruler. Share on Pinterest Some eyewear ...

When you buy a new compound bow, one of the first questions you’ll be asked is: What’s your draw length? If you’re not sure, don’t worry, because the basic procedure for how to measure draw length is ...

The best way to measure your feet for running shoes is by heading to the shoe store and getting fitted by an expert. But if you need to troubleshoot sizing on your own, all you need is a ruler, paper, ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? Fractions: If you’ve ever had difficulty with fractions, using a tape measure just ...

The magnitude-7.8 earthquake that rocked Nepal on Saturday (April 25) may have caused the world's tallest mountain to shrink a bit. But just how do scientists measure that change? Official measures ...

If you are building your own PC, you might be interested in how much power your PC uses. Whether you're playing games, or it is sitting idle, it's a good idea to know when the PC costs the most to run ...