physics
Everything you see right now is a wave. The light hitting your eyes traveled from a source — the sun, a lightbulb, a screen — as an electromagnetic wave. Everything you hear is a wave. The sound of your own breathing is a pressure wave rippling through air. The Wi-Fi signal carrying
physics
Everything you see right now is a wave. The light hitting your eyes traveled from a source — the sun, a lightbulb, a screen — as an electromagnetic wave. Everything you hear is a wave. The sound of your own breathing is a pressure wave rippling through air. The Wi-Fi signal carrying
physics
Your room gets messy on its own. It never gets clean on its own. That's not a personal failing — that's a law of physics. The second law of thermodynamics says that disorder in a closed system always increases or stays the same. It never spontaneously decreases.
physics
Your room gets messy on its own. It never gets clean on its own. That's not a personal failing — that's a law of physics. The second law of thermodynamics says that disorder in a closed system always increases or stays the same. It never spontaneously decreases.
physics
Energy cannot be created or destroyed. That single sentence, known as the first law of thermodynamics, is arguably the most important statement in all of science. Every joule of energy that exists right now existed at the Big Bang. Not a single joule has been added since. Not a single
physics
Energy cannot be created or destroyed. That single sentence, known as the first law of thermodynamics, is arguably the most important statement in all of science. Every joule of energy that exists right now existed at the Big Bang. Not a single joule has been added since. Not a single
physics
Newton didn't invent gravity. Gravity existed for 13.8 billion years before Newton was born. Apples fell from trees, planets orbited stars, and tides rose and fell for eons without anyone writing a single equation about it. What Newton did, in his 1687 work Principia Mathematica, was describe
physics
Newton didn't invent gravity. Gravity existed for 13.8 billion years before Newton was born. Apples fell from trees, planets orbited stars, and tides rose and fell for eons without anyone writing a single equation about it. What Newton did, in his 1687 work Principia Mathematica, was describe
physics
Physics class usually starts by handing you F=ma on day one, like you're supposed to care about a formula before anyone has told you why it matters. That's backwards. Here's what they should say first: everything in the universe is either moving or
physics
Physics class usually starts by handing you F=ma on day one, like you're supposed to care about a formula before anyone has told you why it matters. That's backwards. Here's what they should say first: everything in the universe is either moving or