New PDF release: Why Is Milk White?: & 200 Other Curious Chemistry Questions
By Simon Quellen Field, Alexa Coelho
By way of chemistry, most children have extra questions than solutions. Why do you get cavities in the event you consume an excessive amount of sugar? How does solar block safeguard your dermis from getting a sunburn? What makes soda so fizzy? And why do you want antifreeze on your automobile? youngster Alexa Coelho quizzed her neighbor, chemist Simon box, with 1000's of complicated questions, and now she has the solutions. box covers a wide selection of options from easy to complicated, yet regularly with easy, easy-to-understand explanations.
And for these readers who are looking to see chemistry in motion, Why Is Milk White? additionally incorporates a dozen certain experiments to aim at domestic. raise latent fingerprints from a "crime scene" utilizing tremendous glue (for a pitcher or gentle floor) or iodine (for paper). hole out the zinc inside of a penny utilizing muriatic acid, leaving just a skinny copper shell. behavior a paper chromatography scan to split nutrients coloring into its part dyes. Or use easy-to-find chemical compounds to create plastic "slime," foolish Putty, or a bouncing ball. This booklet is the suitable source for budding scientists far and wide.
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Extra info for Why Is Milk White?: & 200 Other Curious Chemistry Questions
4. At every point along the new wave, we can compute the wave height by adding the clocks together using the recipe we just outlined and asking how much of the new clock hand points in the 12 o’clock direction. When the clock points to 12 o’clock this is obvious – the height of the wave is simply the length of the clock hand. Similarly at 6 o’clock, it’s obvious because the wave has a trough with a depth equal to the length of the hand. 37 The Quantum Universe It’s also pretty obvious when the clock reads 3 o’clock (or 9 o’clock) because then the wave height is zero, since the clock hand is at right angles to the 12 o’clock direction.
46 Everything That Can Happen Does Happen must spread out as time passes. What we need to establish is exactly how it spreads. Unlike a water wave, we are proposing that the electron wave spreads out to fill the Universe in an instant. Technically speaking, we’d say that the rule for particle propagation is different from the rule for water wave propagation, although both propagate according to a ‘wave equation’. The equation for water waves is different from the equation for particle waves (which is the famous Schrödinger equation we mentioned in the last chapter), but both encode wavy physics.
The fact that it is not something we can touch, smell or see directly is irrelevant. Indeed, we would not get very far in physics if we decided to restrict our description of the Universe to things we can directly sense. In our discussion of the double-slit experiment for electrons, we said that the electron wave is largest where the electron is most likely to be. This interpretation allowed us to appreciate how the stripy interference pattern can be built up dot by dot as the electrons arrive.
Why Is Milk White?: & 200 Other Curious Chemistry Questions by Simon Quellen Field, Alexa Coelho