News tagged with gravitational forces

What is the value of G?

NIST has taken part in a new push to address a persistent and growing problem in physics: the value of G. The Newtonian constant of gravitation, used to calculate the attractive force of gravity between objects, is more than ...

Oct 28, 2014
4.9 / 5 (25) 28

What would it be like to fall into a black hole?

Let's say you decided to ignore some of my previous advice. You've just purchased yourself a space dragon from the Market on the Centauri Ringworld, strapped on your favorite chainmail codpiece and sonic ...

Sep 08, 2014
3.4 / 5 (32) 17

Magic and symmetry in mathematics

We live in a three-dimensional world. Despite the many benefits this presents, it also makes for a complicated math problem, according to Northeastern associate professor of mathematics Ivan Loseu. The best ...

Mar 12, 2014
4.8 / 5 (5) 0

New technique measures mass of exoplanets

To date, scientists have confirmed the existence of more than 900 exoplanets circulating outside our solar system. To determine if any of these far-off worlds are habitable requires knowing an exoplanet's ...

Dec 19, 2013
5 / 5 (21) 0 | with audio podcast

Laser tripod for better levitation

(Phys.org) —Physicists from The Australian National University have shown that three lasers are better than one when it comes to levitating small but visible objects on light, designing an extremely precise ...

Oct 30, 2013
5 / 5 (2) 0 | with audio podcast