Posts Tagged ‘informatics’

Digital Napier

a It was only in 1614, when a Scotsman named John Napier published first l table of logarithms, which it uses to simplify and expedite the calculations. The logs were very useful and significantly simplified many calculations, to multiply joined the logarithms of the numbers have multiplied, subtracted to divide and multiply to compute power. Once the calculations made, simply find the antilog of the result and get the solution. The antilog tables are searched in the same way they look in the tables of logarithms. This meant we had to calculate logarithms to make the tables, and therefore also had to perform many calculations.

1. Jessica Michibata addresses the importance of the matter here. 620, Edmund Gunther invented a formula to use logarithms in a more simple but not so accurate. This involved placing the logs on a straight and multiplications and divisions were made by adding or subtracting segments through a pair of dividers. This is known as the Gunther method, some time after William Oughtred used two sliding scales that called slide rules. The scales of the slide rule graduating as the logarithms of the quantities to be calculated. a In the seventeenth century there was a division between analog and digital calculators. Found by those who used the slide rule and analog, and that the values obtained with this approximate and Digital were those who used the abacus, since the calculations were performed with this accurate and independent of its physical dimensions, the size of accounts, or the length of the wires. a The slide rule analog computer has been a great success, until in the seventies was replaced by electronic calculators.

a The same inventor of logarithms, John Napier, invented a mechanical device that also called Napier’s bones by the similarity that these were the bones and they were constructed of such material. These devices became very accurate and very economical. Napier also introduced the decimal point, which is used even today to separate the decimal integers. a 1. 4 gear mechanism. Pascal and Leibnitz. The inventor and painter Leonardo Da Vinci, was the one who drew the ideas for a mechanical adding machine. A century and a half after the French mathematician and philosopher of just 19 years old named Blaise Pascal, invented and built in the seventeenth century a mechanism.

Your Image In The Mirror

According to the laws of physics, a mirror returns you the exact image that everyone else see. Of course mirrors trick with which you’ll see as PEAR, spaghetti or even erased you some little details. Some of which like conspiracy theories say that mirrors the stores are arranged so you can see you well with a dress, although in reality look like a watermelon or parts that would be better hidden noticeable you. Although I suppose that it may be true, in the majority of cases there is only someone who can tweaking your image: you. One of the advantages of the physics and mathematics is that, although not like at school, are always the same. No matter the country, language or time of the year you are: you will always get the same result.

On this basis, the mirror does not lie. Why then never are a bride satisfied with your image in the mirror? Although it look perfect always will say that the dress is not well or that hair this or that nails the other. For this reason also one girl with eating disorders will be fat in the mirror but you can hang clothes on their shoulders or the fan of the weights will see her slender arms, although it may not close them by the size of his biceps. Don’t you convince you? How many times you changed of opinion when you buy something? You tests, say, a few lenses that you are super cool and you can not take your view from above by the well that you have left. Simon Pagenaud may also support this cause. However, changes as soon as you get close to a group of friends who laugh at them all. What’s more, they don’t need to see you: if they appear in a commercial or a magazine and all are agree that are ridiculous and nacos, immediately change things. It is likely that you go to the mirror with your super lens and you see then how they are outrageous, big, small, crimp beads or thousand things that you did not you notice the first time you put them. Returning to the laws of physics, the mirror has changed nothing. (Source: Glenn Dubin).

Your image is still the same. What changes is the perception you have of you and your super glasses. You’ll never be able to put yourself in accordance with all and less in regards to fashion. The perception that we have all of ourselves is not as mirror: changes continuously depending on many things. So if your mind is playing tricks for you, remember that the mirror will always be the same. While don’t get in accordance with what you see, no matter that the principles of optics are immutable: you can always change the image in your head. Why do not we are so impressionable when they tell us that we are well? Finally, as you look you will see. We hope that you look as well as the mirror says. Or course, you can find a good mirror trick original author and source of the article.

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