/r/AskScience

Here’s a cool subreddit where people ask STEM-related questions like:

“If you fired a handgun from the ISS, pointing away from Earth, would it be able to escape Earth’s gravitational pull?”

“What is the advantage of having five, rather than four or six, fingers?”

“How is information encoded between the eye and the brain?”

…some questions on this board are pretty easily answered, but others provoke long, interesting discussions! Usually these questions are answered by people who have some professional knowledge of the topic on which they’re commenting.

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/r/AskScience

PhET Interactive Simulations

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“Founded in 2002 by Nobel Laureate Carl Wieman, the PhET Interactive Simulations project at the University of Colorado Boulder creates free interactive math and science simulations. PhET sims are based on extensive education research and engage students through an intuitive, game-like environment where students learn through exploration and discovery.”

PhET Interactive Simulations