Tag Archives: energy

A phone battery has an energy equivalent to 40 .44 Magnum bullets

Now, that is something new, but the fact that a phone battery can hurt you is not new. Do NOT ever, under any circumstances breck the battery apart. Since it has compounds of lithium in it and since lithium is very reactive with air, the batter will start burning and will explode. The energy stored […]

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SciShow: what is energy?

Energy can be found everywhere and in many forms. In the same way as the existence of matter, energy as existed since the dawn of the Universe. It is a constant quantity in the Universe: nothing gets lost, but only transformed. Energy is the ability to do work and mass and energy are the same […]

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[Rant] And again: our mass comes from the kinetic and potential energy inside nucleons

Yesterday you could read on this blog that mass and energy are the same, as mass is energy compressed in a given space in a given form. Nucleons, the subatomic particles that form the nucleus, ie the protons and neutrons, contain most of our mass and inside them there are quarks which are bound by […]

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What’s the difference between mass and energy?

Nick, from Science Asylum, explains the difference between mass and energy. There is none. Mass is energy compressed in a given space. Most of the weight of a subatomic particle in the nucleus comes from the nuclear strong forces inside the protons and neutrons, not from the particles themselves, like gluons or quarks. Neat, eh? […]

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How big is the force that a falling bowling ball hits you with? [painfull]

Ask A mathematician explains in a joyful manner how much force is involved when a falling bowling ball hits your toes. As painful as it is we have to do a bit of math to see what energies are at work in there. As you know Energy = Work = Force * Distance. Since the […]

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Learn what energy is with Bill Nye, The Science Guy

Bill Nye, one fo the greatest educators of our times, explains in this old video what energy is. Many know that energy is conserved, that you can’t make or destroy energy, that is transforms and that ii is equal with the work done by a force that needs to move an object for a given […]

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E=mc ² is not the complete equation

Man, you got to love Minute Physics. Being too lazy and accepting many formulae like they were laws, when they are only a part of the whole, leads us to ignorance. Minute Physics explainws why E=mc ² is only a partof Einstens equation. Awesome. The full equation is E ²=(mc ²) ²+(pc) ². For an […]

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Destin explains : Physics of Slingshots [video]

Destin (Smarter Every Day) does interesting things in his back yard, and that means that his videos are educational at heart and make you understand better the world we live in. He puts theory into practice and shows us the beauty of applied science. Did you ever wondered how slingshots work? It seems that the […]

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