By Goldberg D., Blomquist J.
Solutions to science's such a lot enduring questions from "Can I holiday the light-speed barrier like on big name Trek?" and "Is there lifestyles on different planets?" to "What is empty area made of?"This is an imperative consultant to physics that gives readers an outline of the most well-liked physics subject matters written in an obtainable, irreverent, and interesting demeanour whereas nonetheless holding a tone of wry skepticism. Even the beginner should be capable of persist with alongside, because the subject matters are addressed utilizing undeniable English and (almost) no equations. Veterans of well known physics also will locate their nagging questions addressed, like even if the universe can extend quicker than gentle, and for that subject, what the universe is increasing into anyway.Gives a one-stop travel of all of the tremendous questions that seize the general public mind's eye together with string idea, quantum mechanics, parallel universes, and the start of timeExplains severe technological know-how in an enjoyable, conversational, and easy-to-understand wayIncludes dozens of delightfully groan-worthy cartoons that specify every thing from specific relativity to darkish Matter Filled with attention-grabbing details and insights, this e-book will either deepen and rework your knowing of the universe.
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Additional info for A user's guide to the Universe
Electrons are the lightest particles we can work with easily. If you don’t know too much about electrons, that’s fine; we talk about them quite a bit more in chapter 4. For now, all you have to know is that we work with electrons all the time. ” What happens if we shoot electrons at a double-slit experiment and then put a fluorescent screen behind it? Every time an electron hits the fluorescent screen, we get a flash of light, so we can count how many photons hit any particular part of the screen.
Radio signals are just a specific type of light wave, and all light travels at 299,792,458 meters per second. * After the radio wave reaches *So urgent. 39 40 A U ser ’s G uide to the Universe your antenna, it is converted into a sound wave (which is created by the motion of your speakers), which hits your face at about 340 meters per second. This means that with rare exceptions, it takes less time for the radio signal to travel from the radio station transmitter to your radio than it does for the sound wave to travel from the speaker to your ear.
We mentioned before that your physical intuition wouldn’t do you very much good in quantum mechanics. We hope you haven’t thrown away your water wings, because you’re about to get tossed into the deep end. Lots of photons go through each slit and interfere with one another, demonstrating wave behavior. Mr. Hyde, wanting to revert to Dr. Jekyll, has an idea. “Perhaps,” he growls to himself, “if I turn down the intensity of the beam, only one photon will go through at a time. ” Oh, the poor, deluded lummox.
A user's guide to the Universe by Goldberg D., Blomquist J.
Categories: Nonfiction 3