1973
computer privacy
“There is growing concern that computers pose a dangerous threat to privacy. Many computers contain personal data and can be accessed from remote devices, making them an excellent tool for collecting large amounts of information about individuals and groups. It may soon become feasible to compile documents for the entire citizenship, although computer systems can be adapted to protect their contents. , can be achieved in two different ways: ciphers or codes, where ciphers always assign alternate symbols to a given sequence of alphabetic characters, where codes are conceived in advance and stored in a secret list, such as a codebook. It can only convey the semantics that are present.Other cryptographic approaches are still under investigation.”
1923
Rich Tomb of King Tutankhamun
“Biban el-Mulk, Valley of the King’s Tombs, is a desolate and desolate area behind the western plain of Thebes. About 60 tombs in the valley were already known. November 5, 1922 , Howard Carter, came across a rock step below the path leading to the tomb of Ramesses VI.The stairs and passageway of the L-shaped approach were removed, leading to the tomb of Tutenkamon. It’s the source of virtually all the treasures that have been removed, and given how much remains in the tombs, it will take more than two years of work to properly preserve, record and appreciate them.”
classy vitamins
“The discovery of vitamins [Frederick Gowland] Hopkins as recently as 1912. The essentiality of these substances is now generally accepted. Three substances of the so-called vitamin class, called A, B and C, are definitely distinct and may even exist. They don’t appear to be one chemical type and are effective in very small amounts. The green tissue of plants seems to be the main site of vitamin synthesis. ”
it’s called insulin
“A product named insulin was prepared by Canadian biologists in Toronto. [remedy] against diabetes. Preparations are made from cow, sheep and pork pancreas. ”
1873
Polaris Lost and Found a Survivor
“A telegram brings news that a US probe may be lost. Polaris And the end of the Arctic expedition. On October 15, 1872, a crew of about 19 left the ship and laid provisions on the ice floes. A severe storm broke out, Polaris Divide her moorings. Comrades on the ice, in dismay, watched their ship disappear. The tide and wind were fortunate enough to push a large ice floe carrying the survivors through Baffin’s Bay and Davis Strait, and on April 30, after spending 196 days on the ice, she was apparently rescued by a British steamship. is. tigressAlthough the rescued party’s suffering is said to be terrible, they were all in relatively good health. ”
tidal power
“There was a recent trial on the East River of an Edward W. Morton machine that propels the machine to which it is attached by means of ‘floats’ that rise and fall with the waves and currents. In testing, it was geared to a saw and worked at the full speed of a steam-powered circular saw, though perhaps not as uniformly. ”
music from fire
“If you introduce two flames into a glass tube, they will oscillate in unison at a distance of one-third the length of the pipe. The sound ceases.When you change the position of the flame, the sound gets quieter.M. Kastner built a new instrument with a very distinctive tone, very similar to the human voice.The “pyrophone” has three I have a keyboard. Each key communicates with a flame conduit pipe within a glass tube. When you press the key, the flame will go away and make a sound. When the pressure is removed, the confluence of the flames will quickly subside. ”
