February 18, 2025
3 Pain read
Science history 50, 100 and 150 years ago
Color blindness; End of fire
1975, blind color: “People with protanopy cannot separate green and red or colors. Color blocks (top row) simulate the appearance of light equal. People with deuteranopia can also distinguish between red, green or colors. Color blocks (Middle row) simulate the same lights. People with anomal Trichromacy may feel red, green and blue to match all colors, but they need unusual proportions (Bottom row); When a yellow was asked to match (Center)They can choose a rose (left) or green (right). “
American scientific Vol. 232, March 3, 1975.
1975
Chemical War Explained
“Biological weapons have been negotiated from the arsenal of the world’s military power. In January, the first use of the 1925 Geneva, the 1972 Biological weapons of the 1972 proposal to propose the conference of disarming the world treaties that would lead to real chemical disarmament. Therefore, verification and inspection issues They will be serious, and the definition will be remarkable: Unlike the rest of the world, the rebellion has been control of control gases and herbicides. They have both been expanded in the Vietnam war agents of the chemical war. “
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Increase fuction.
The “Ford Administration has decided to start working for a 1976-year-old fusion power to the University of Princeton. If the funds are accepted, the exact design of the proposed installation can be started almost immediately with the manufacture of components and site construction next year to reach. The machine would be a plasma-incommunication system, known in general to Tokamas. According to the plan, fusion Assuming the experimental reactor is the first system for achieving the threshold of the ‘Breakeven’ threshold, 1980, 1980. It would be ready to operate until the year, approximately $ 215 million. “
Tokamak Fusion Test Reactor began in 1982 in operation. He created a significant output of energy, but it never reached Breakeven. Was turned off in 1997.
1925
End of fire
“Large changes in human matters. To obtain a mechanical force for the printing press and the mechanical force for human labor, people are unlikely to appreciate its importance. It was a replacement of an electric lamp. Then the electric motor came in the place of small steam engines. The next step, and especially interested in electric industry The one is, the replacement of electricity is to make fires fire industry. “
1875
Difference sent
“Congress has taken care of his interests. Free talks of members and other things will be sent to the public, which is a few people’s tax due to the influence of the company’s expression lobby. Package sent from New York to San Francisco The lowest charge is 75 cents; the post office weighs a 16-cent pound. The measure affects public reading. Pay three cents are needed American scientific and other large pieces of paper. A person charges three cents to send this paper across the river from New York to Brooklyn, but two cents above the ocean to London. “
Snowflake Hitchhikers
“It’s hard to be convinced that it is placed in the ground without noise. In the atmosphere of the atmosphere of the porous substance, the microscopic body of the Earth dust. Since M. Gaston Tissandier says water obtained from a single cry In a drop, coal parts, fabric parts, starch grains, sandy issues and other horrible substances He didn’t, not part of the diameter of three ten thousand inches. “
