What scientist took a fee from those who wanted his autograph? Detailed answer

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What scientist took a fee from those who wanted his autograph? Detailed answer

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What scientist took a fee from those who wanted his autograph?

During his trip to the United States in 1930, Albert Einstein charged people who wanted his autograph. A simple painting cost $1, an autograph on some memorabilia cost $5. The collected funds were spent on charity.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Who are lizards?

Lizards belong to the class of reptiles, or reptiles, which also includes crocodiles, turtles, and snakes. There are about three thousand species of lizards. A typical lizard has four legs, a short body and a long tail. All lizards change their scaly skin several times a year. They live in all parts of the world, except for the polar regions. Tropical zones are most favorable for them, but they can also live in regions with a temperate climate. Here in winter the lizards hibernate. Most lizards are small: they usually do not reach half a meter in length.

The largest lizards are monitor lizards of Komodo Island in Indonesia, which can reach three meters in length and weigh about one hundred and forty kilograms. They are very reminiscent of mythical dragons from fairy tales. As a rule, lizards do not live long. Some live only two or three years. The record lifespan for a lizard in captivity is twenty-five years. Most lizards feed on insects, catching them with their long tongue right in the air. They usually swallow their prey whole.

Although lizards have teeth and use them to hold their prey, they rarely use them to bite or chew it. Some lizards have a very specific "diet". For example, horned lizards usually feed on ants. Other lizards eat grass or only fruits.

Large monitor lizards are one of the few carnivorous lizards. They feed on carrion, and sometimes they catch small wild pigs, which they swallow whole. Most species of lizards hatch from eggs, but there are some that are born alive. The female usually buries the eggs in the ground or hides them in the trunks of rotten fallen trees. Often she protects her eggs from animals who want to eat them.

Small lizards sitting in an egg grow special "egg teeth" above the upper jaw. These teeth are used to break through the eggshell when it's time to hatch. And then those teeth disappear. Many lizards live in deserts. They are able to endure such heat and dryness in which many animals cannot live.

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body music 03.05.2016

From time immemorial, people have created music with their own physical "assets", so to speak - voices or hands, even if these hands had to use "instruments" (literally and figuratively) to play it. The efforts of many inventors in recent times have been aimed at expanding the capabilities of such tools. For example, not so long ago, Georgia Institute of Technology (USA) professor Gil Weinberg demonstrated an automatic prosthesis that gives the drummer unprecedented and unheard of possibilities in the form of a third hand that reacts both to the music being played and to the movements of the musician.

However, no one has yet thought of using the biological potential of the body. This was done by a group of musicians, engineers and designers from New York, united in a company called XTH. And united them in her musical instrument Xth Sense ("X feeling"), developed by a specialist in the field of "biophysical music" Marco Donnarumma (Marco Donnarumma). Marco started working on the instrument in 2010 when he was a student at the University of Edinburgh (Scotland). And by 2016, the company had gotten a few prototypes smart enough to place a crowdfunding call on the Kickstarter crowdfunding site.

The XTH Sense device is designed to be worn on the arms, legs or waist. Sensors, a radio transmitter and a highly sensitive bioacoustic microphone are hidden under the polyurethane shell. During the movement of users, sensors measure body temperature, record gestures and capture bioacoustic signals from contracting muscles, blood flowing in vessels and heartbeat. With the help of radio signals, information is transmitted to computers located at a distance of up to 15 m, where it is processed by software created by the company.

Depending on the wishes of the user, the XTH Sense device can create digital music or enhance the capabilities of a live instrument. Moreover, when using graphic design programs, the device can recognize body movements as commands to change the direction of the stroke, the size of the brush or the intensity of the paint, thus creating a synthesis of "biophysical" music and "biophysical" painting.

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