At first, Edison invented paraffin paper, which was only widely used as packaging material for food and candy. Later, he tried to carve the outline of the words on wax paper to form a wax lettering paper tray, put white paper under the paper tray, and then rolled it off the wax lettering paper with an ink roller. A wonderful thing happened, and clear handwriting appeared on the white paper. Later, after many improvement experiments, Edison began to mass-produce the copier he invented in 1976, and all of a sudden institutions, schools, institutions and organizations adopted this stencil mimeograph. Because Edison's copier is very popular all over the world, Edison deeply realized that he should invent things that people generally and deeply need.
Synchronous transmitter
Early telegrams could only transmit one message at a time, but could not exchange signals at the same time. Because Edison himself was a telegraph technician, he began to improve the traditional telegraph and made a double telegraph. 1974, he developed a quadruple telegraph, which is also a synchronous telegraph. At that time, before the development of radio, synchronous transmitter was a major breakthrough.
Improved telephone
As we all know, the modern telephone was invented by Bell. In fact, the telephone can send and receive clearly, thanks to Edison's repeated experiments, which broke through the traditional pattern and made a toner transmitter, which improved the sensitivity, volume and receiving distance of the telephone in one fell swoop. Otherwise, you will often say hello when you call now! Hey! I can't hear you. I can't hear you clearly.
The phonograph was born.
/kloc-one night in February, 877, the staff of Mengluoyuan Laboratory trembled slightly, not because of the cold, but because they heard the recording for the first time in human history: "Ma Xuan has a little sheep, and its fur is as white as snow. Wherever Ma Xuan goes, the lamb is always by her side ... this great invention. The French government also awarded Sir Edison the title! Later, Edison made many improvements to the phonograph until the drum was changed to a bakelite turntable. This is not a year or two, but after decades of continuous improvement!
lightbringer
/kloc-at the beginning of the 0/9th century, people began to use gas lamps, but gas was supplied by pipelines. Once it leaks or is blocked, it is very prone to accidents, and people are very eager for the reform of lighting. In fact, Edison set himself an impossible task: in addition to improving lighting, he must also create a power supply system.
So he and his partners in Luomeng Garden made more than 600 experiments on heat-resistant materials and more than 600 kinds of plant fibers 1600 times before they made the first carbon filament light bulb, which can burn for 45 hours at a time. Later, he constantly improved the manufacturing method on this basis, and finally introduced a bamboo filament light bulb that can ignite 1200 hours. American tourist brother plane
Yuan Longping, China-Hybrid Rice
Russian scientists invented invisibility cloak.
It is reported that Professor Oleg Gadomski is a well-known professor in the Department of Quantum and Optoelectronics of Russian Ulyanovsk State University. Professor Gadomski has been conducting experimental research on gold nanoparticles for many years. Through years of research, Professor Gadomski found that as long as an object is covered with a "special coat" made of gold colloidal particles, it can disappear from the meat, that is, the invisible effect is achieved.
The invisibility cloak invented by Professor Gadomski makes use of the characteristics of light and the principle that objects reflect light. Professor Gadomski said: "At present, we can only make stationary objects invisible, because when an object moves, the radiation frequency of light will change, so we can't keep moving objects invisible at present. However, I believe that scientists will soon create a mobile invisibility cloak like Harry Potter's magic cloak. "
In fact, Professor Gadomski is not the first scientist to succeed in the field of "artificial invisibility". In March 2005, two scientists from the University of Pennsylvania, Aru and Inquet, announced that they had invented a theoretical method to make objects "invisible". Plasma laser is used in the study.
The invention of Russian scientists is similar to the design of American scientists, and both are based on the concept of greatly reducing scattered light. Humans can see objects because when light strikes them, they will reflect light again. As long as this process is interrupted, people can't see objects.
Professor Gadomski has applied for a scientific patent for the invisibility cloak he invented. Researchers believe that large objects such as airplanes and spaceships can "disappear" from radar screens as long as they are coated with this special substance.
Innovative invention and production method 1, homemade badminton
Preparation materials: an empty beverage bottle, two foam fruit nets, a rubber band and a glass ball.
Production process:
1. Take an empty 250ml beverage bottle and cut off the upper part of the bottle body;
2. Divide the cut part into 8 parts, cut it to the bottleneck with scissors, and then cut each part into a petal shape with the same size;
3. Cover the foam fruit net outside the bottle and fix it at the mouth of the bottle with a rubber band;
4. Wrap a glass marble with another foam fruit net and plug it into the bottle mouth until it is exposed about1cm;
5. Cut off half a table tennis ball, cover the bottom of the hemisphere on the bottle mouth, cut the four sides into whiskers, cover the bottle mouth and fix it with rubber bands.
6. After beautification, a homemade badminton is finished. Hit a dozen with a badminton racket and see how it works.
2, homemade soap paper
Production materials and tools:
White paper with good water absorption, small pieces of soap, writing brush and disposable beverage cans.
Production method:
Chop up the soap first, put it in a jar, put a proper amount of water in it, heat the cup on the stove, and when the soap melts, cut the white paper into the size of a matchbox, coat it with soap one by one, then take it out and dry it in the shade, and you can make soap paper.
3. homemade hot air balloon
1. First, we cut 6-8 leaflike pieces of paper from soft paper.
2. Fold them in half and stick the edges together to make a balloon.
3. Stick the four connecting wires to the bottom of the balloon with adhesive tape. Fix the other end of the line on the table with plasticine.
Try to set the speed of the hair dryer very slowly. Aim the air outlet upward at the opening at the bottom, and then turn on the switch. The balloon will gradually get bigger, tighten the thread and leave the table. Innovative invention and production method 1, homemade badminton
Preparation materials: an empty beverage bottle, two foam fruit nets, a rubber band and a glass ball.
Production process:
1. Take an empty 250ml beverage bottle and cut off the upper part of the bottle body;
2. Divide the cut part into 8 parts, cut it to the bottleneck with scissors, and then cut each part into a petal shape with the same size;
3. Cover the foam fruit net outside the bottle and fix it at the mouth of the bottle with a rubber band;
4. Wrap a glass marble with another foam fruit net and plug it into the bottle mouth until it is exposed about1cm;
5. Cut off half a table tennis ball, cover the bottom of the hemisphere on the bottle mouth, cut the four sides into whiskers, cover the bottle mouth and fix it with rubber bands.
6. After beautification, a homemade badminton is finished. Hit a dozen with a badminton racket and see how it works.
2, homemade soap paper
Production materials and tools:
White paper with good water absorption, small pieces of soap, writing brush and disposable beverage cans.
Production method:
Chop up the soap first, put it in a jar, put a proper amount of water in it, heat the cup on the stove, and when the soap melts, cut the white paper into the size of a matchbox, coat it with soap one by one, then take it out and dry it in the shade, and you can make soap paper.
3. homemade hot air balloon
1. First, we cut 6-8 leaflike pieces of paper from soft paper.
2. Fold them in half and stick the edges together to make a balloon.
3. Stick the four connecting wires to the bottom of the balloon with adhesive tape. Fix the other end of the line on the table with plasticine.
Try to set the speed of the hair dryer very slowly. Aim the air outlet upward at the opening at the bottom, and then turn on the switch. The balloon will gradually get bigger, tighten the line and leave the table.
4, homemade flashlight
The specific manufacturing method is: lift one end of an abandoned can (such as Lulu beverage can) and beat the other end with a round hammer. Roll up two 1 batteries with thick corrugated cardboard and put them in a can, with the positive pole facing up and the negative pole facing down. Find a suitable plastic cover (for example, the magic big roll cover can just be buckled on Lulu's beverage can), and dig a round hole in the center of the cover, the size of which is suitable for the light bulb to be inserted tightly. Insert the bulb base into the small hole. Take a section of tracing wire, peel off the wire skin at both ends, wrap one end around the lamp cap, and tie a small hole at the other end from the side of the plastic cover. Put the plastic cover on the jar. Check whether the bulb and battery are in close contact. Disposable flashlights will be ready here. When in use, press the wire on the side wall with your thumb on the unpainted weld away from the can, and the flashlight will glow. When your thumb jumps off the wire, the flashlight will go out, which is very convenient to use.
5, homemade solar cookers
Find a concave reflective bowl on a big flashlight, and cut it into a cylinder about 4 cm long with rigid foam plastic or wood, just enough in diameter to fit into the round hole of the reflective bowl. Drill a fine hole horizontally at one end of the cylinder, insert an iron wire with a diameter equivalent to the aperture, and then bend the two ends of the iron wire exposed outside the cylinder at 90 degrees, leaving 5 cm each. Insert the cylinder into the round hole of the reflective bowl, and then insert both ends of the iron wire on the foam plastic or wooden bottom plate. Sharpen both ends of a thin bamboo stick, insert one end into the cylinder in the center of the reflective bowl, and insert a small piece of potato at the other end. Put the device in the sun, let the reflective bowl face the sun, and then, patiently adjust the length of the bamboo stick so that the inserted potatoes are just in the focus of light. Before long, the potatoes will be cooked by the sun and smell delicious.
6, homemade colored candles
Materials: colored crayons, wax
Production method:
1. Find an abandoned canned beverage barrel (for example, 1.25 liter coke bottle), cut off the lid and cut the wax into the barrel.
2. Put the bucket in hot water, stir the wax inside and let it melt completely. It is best to use boiled water. But ask your parents for help, or do this step under their supervision.
3. Pour the molten liquid into a beautiful container (for example, put a heart-shaped chocolate box). Don't pour too much. As for the reason, look down. Of course, you have to put the thread as a candle core in the container first.
4. The original idea of wax cooling, A pours the melted colored crayons in according to the surface painting method (colored crayons come in handy at this time). In this way, different colors of wax are added layer by layer, and beautiful candles are made.
7. Self-made wall-mounted flower basket
Materials and tools: two sprite bottles, glue, meat cleaver, scissors.
Production method:
1. Remove the green bottom cover of Sprite bottle, cut it into lotus shape, turn it over and stick it on the bottle body to form the base.
2. Cut a 2 cm wide green ring from the green bottom sleeve and put it on the bottle.
3. Remove the bottleneck, and cut a 13cm long, 8cm wide wideband and several 3cm wide narrowband on the bottle.
4. Carve a pattern on a 3 cm narrow strip with a meat cleaver.