Quotes with visually

Inspirational quotes with visually.

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To escape the throngs, we decided to see the new Neil Degrasse Tyson planetarium show, Dark Universe. It costs more than two movie tickets and is less than thirty minutes long, but still I want to go back and see it again, preferably as soon as possible. It was more visually stunning than any Hollywood special effect I’d ever seen, making our smallness as individuals both staggering and - strangely - rather comforting. Only five percent of the universe consists of ordinary matter, Neil tells us. That includes all matter - you, and me, and the body of Michael Brown, and Mork’s rainbow suspenders, and the letters I wrote all summer, and the air conditioner I put out on the curb on Christmas Day because I was tired of looking at it and being reminded of the person who had installed it, and my sad dying computer that sounds like a swarm of bees when it gets too hot, and the fields of Point Reyes, and this year’s blossoms which are dust now, and the drafts of my book, and Israeli tanks, and the untaxed cigarettes that Eric Garner sold, and my father’s ill-fitting leg brace that did not accomplish what he’d hoped for in terms of restoring mobility, and the Denver airport, and haunting sperm whales that sleep vertically, and the water they sleep in, and Mars and Jupiter and all of the stars we see and all of the ones we don’t. That’s all regular matter, just five percent. A quarter is “dark matter,” which is invisible and detectable only by gravitational pull, and a whopping 70 percent of the universe is made up of “dark energy,” described as a cosmic antigravity, as yet totally unknowable. It’s basically all mystery out there - all of it, with just this one sliver of knowable, livable, finite light and life. And did I mention the effects were really cool? After seeing something like that it’s hard to stay mad at anyone, even yourself.

...imagine that you hold in one hand an oddly shaped stone. You keep this hand closed into a fist, but still you can feel the stone’s curvature and the pointed edges, the roughness—of course, you know the relative size and weight and might even have a mental image of the color of this stone, even if you have not yet laid eyes upon it. Imagine that stone in your hand. Imagine what it is like to know everything about the way it feels, but nothing of how it looks. Hold that in mind for a moment.Now, imagine that there is a person standing next to you who tells you that she also holds a stone in her hand. You look down and see the clenched fist and she sees yours and you confess the same. Neither of you, it seems, has yet opened the hand and seen the stone. Still, you can only trust each other’s proclamations. Standing together with your stones in hand, the two of you theorize about whether or not your respective stones are similar to one another. You discuss mundane details about your stones (not the special ones—you hesitate to make mention of the sharp point in the northern hemisphere or the flat area on the bottom). Your neighbor finally notes similarities between her stone and yours and you nod with relief and acknowledge that your stones indeed share reasonable commonalities. Over the course of your discussion, you and your neighbor finally conclude, without bothering to open your hands, that the stones you hold must indeed be quite similar.Are they? It is only suitable to say that they are. At the same time, and in spite of your desire not to offend, there is no doubt in your mind that the stone you hold bespeaks a greater prominence than that of your neighbor. You are not sure how you know this to be true, but it must be so! And I do not mean that this stone simply holds a greater subjective prominence. It has something of the universal, for it is, indeed, an auspicious stone! Silently, you hypothesize in what ways it must be special. It is possibly different in shape, color, weight, size and texture from the other, but you cannot confirm this. Perhaps, it is special by substance? Still, you are unsure. The very fact of your uncertainty begins to bother you and unleashes within you a deep insecurity. What if you are wrong and your stone is actually inferior to the other…or inferior even to some third stone not yet encountered? Meanwhile, your neighbor is silently suffering in the same agony. Both of you tacitly understand that, without comparing the two visually, it is absurd to proclaim the two stones similar. Yet, your fist remains clenched, as does your neighbor’s and so you find yourselves unable to hold out the stones before you and compare them side-by-side. Of course, this is possible, but the mutual curiosity is outstripped by an inveterate pride, and so you both become afraid of showing (and even seeing) what you have, for fear that your respective stones will be different in appearance from the model that you have each conceptualized in mind. Meekly your eyes meet and you smile to one another at your new comradeship, but, all the while, remain paralyzed by a simultaneous shame and vanity.

If we ascribe the ejection of the proton to a Compton recoil from a quantum of 52 x 106 electron volts, then the nitrogen recoil atom arising by a similar process should have an energy not greater than about 400,000 volts, should produce not more than about 10,000 ions, and have a range in the air at N.T.P. of about 1-3mm. Actually, some of the recoil atoms in nitrogen produce at least 30,000 ions. In collaboration with Dr. Feather, I have observed the recoil atoms in an expansion chamber, and their range, estimated visually, was sometimes as much as 3mm. at N.T.P.These results, and others I have obtained in the course of the work, are very difficult to explain on the assumption that the radiation from beryllium is a quantum radiation, if energy and momentum are to be conserved in the collisions. The difficulties disappear, however, if it be assumed that the radiation consists of particles of mass 1 and charge 0, or neutrons. The capture of the a-particle by the Be9 nucleus may be supposed to result in the formation of a C12 nucleus and the emission of the neutron. From the energy relations of this process the velocity of the neutron emitted in the forward direction may well be about 3 x 109 cm. per sec. The collisions of this neutron with the atoms through which it passes give rise to the recoil atoms, and the observed energies of the recoil atoms are in fair agreement with this view. Moreover, I have observed that the protons ejected from hydrogen by the radiation emitted in the opposite direction to that of the exciting a-particle appear to have a much smaller range than those ejected by the forward radiation.This again receives a simple explanation on the neutron hypothesis.



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