At first, the paraffin paper invented by Edison was only widely used in the packaging materials of food and candy. Later, he tried to carve the outline of words on the paraffin paper to form a paraffin lettering paper plate, put white paper under the paper plate, and then rolled it from the lettering paraffin paper with an ink roller. A wonderful thing happened, and clear handwriting appeared on the white paper plate. Later, after many improvement experiments, in 1976, Edison began to mass-produce the copier he invented, and all of a sudden, institutions, schools, institutions and groups all adopted this kind of stencil mimeograph. Because Edison's copier is very popular and popular all over the world, Edison deeply realized that he should invent things that people generally and deeply need.
synchronous transmitter
Early telegraphs could only transmit one message at a time and could not exchange signals at the same time. As Edison himself was a telegraph technician, he began to improve the traditional transmitter and made a double transmitter. In 1974, he developed a quadruple transmitter, that is, a synchronous transmitter. At that time, before the development of radio, synchronous transmitter was a major breakthrough.
improving the telephone
as we all know, the modern telephone was invented by Bell. In fact, the telephone can receive and speak clearly, thanks to Edison's repeated experiments, breaking through the traditional pattern and making a toner transmitter, which improved the sensitivity, volume and receiving distance of the telephone in one fell swoop. Otherwise, we will often say hello when we call now! Hey! I can't hear you. I can't hear you clearly.
The phonograph was born
One night in December, 1877, 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 Mei has a little sheep whose fur is as white as snow. No matter where Ma Mei goes, the lamb is always by her side ... this great ..." The French government also awarded Sir Edison the title! Later, Edison improved the phonograph many times until the drum type was changed to bakelite turntable type. It was not just a year or two, but after decades of continuous improvement!
Messenger of Light
In the early 19th century, people began to use gas lamps (gas lamps), but gas was supplied by pipelines. Once it leaked or blocked, it was very easy to have an accident, and people were very enthusiastic about the reform of lighting. In fact, Edison set himself an impossible task: besides improving lighting, he also had to create a power supply system.
So he and his partners in Mengluo Garden worked tirelessly for more than 1,6 experiments on heat-resistant materials and more than 6 kinds of plant fibers before they made the first carbon filament light bulb, which could burn for 45 hours at a time. Later, on this basis, he constantly improved the manufacturing method, and finally introduced a bamboo filament light bulb that can ignite for 12 hours. American visitor brother-plane
Yuan Longping, China-hybrid rice
Russian scientist invents invisibility cloak
It is reported that, Professor Oleg Gadomski is a well-known professor in the Department of Quantum and Optoelectronics of Ulyanovsk State University. For many years, Professor Gadomski has been conducting experimental research on gold nanoparticles. 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, it has achieved the invisible effect.
The invisibility cloak invented by Professor Gadomski makes use of the characteristics of light and the light reflection principle of objects. 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 25, 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 research.
Russian scientists' inventions are similar to American scientists' designs, both of which are based on the concept of sharply reducing scattered light. Humans can see objects because after light hits them, the objects reflect light again. As long as this process is interrupted, people can't see the object.
Professor Gadomski has applied for a scientific patent for his invention of invisibility cloak. Researchers believe that large objects such as airplanes and spaceships will be able to "disappear" from the radar screen as long as they are coated with this special substance
Innovative invention making methods 1. Self-made badminton
Preparation materials: an empty beverage bottle, two foam fruit nets, a rubber band and a glass marble.
Production process:
1. Take an empty 25ml beverage bottle and cut off the top half of the bottle;
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 body and fix it at the bottle mouth with a rubber band;
4. Wrap another foam fruit net around a glass marble, put it into the bottle mouth, and plug it tightly to expose it for about 1 cm;
5. Cut off half a ping-pong 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 a rubber band.
6. After beautification, a homemade badminton is finished. Hit a dozen with a badminton racket and see how it works.
2. Self-made soap paper
Materials and tools:
White paper with good hygroscopicity, small pieces of soap, a brush and disposable beverage cans.
production method:
first, chop up the soap and put it in a jar, then put the cup on the stove to heat it. When the soap melts, cut the white paper into matchbox sizes, spread the soap solution one by one, and then take it out and dry it in the shade to make the soap paper.
3. Self-made hot air balloon
1. First, we cut out 6-8 leaflike pieces of paper from soft paper.
2. Fold them in half and stick their edges together with glue 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.
4. try to adjust the speed of the hair dryer very slowly. Aim the air outlet upward at the opening at the bottom and turn on the switch. The balloon will gradually become bigger, tighten the thread and leave the desktop, and innovate and invent the production method. 1. Homemade badminton
Preparation materials: an empty beverage bottle, two foam fruit nets, a rubber band and a glass marble.
Production process:
1. Take an empty 25ml beverage bottle and cut off the top half of the bottle;
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 body and fix it at the bottle mouth with a rubber band;
4. Wrap another foam fruit net around a glass marble, put it into the bottle mouth, and plug it tightly to expose it for about 1 cm;
5. Cut off half a ping-pong 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 a rubber band.
6. After beautification, a homemade badminton is finished. Hit a dozen with a badminton racket and see how it works.
2. Self-made soap paper
Materials and tools:
White paper with good hygroscopicity, small pieces of soap, a brush and disposable beverage cans.
production method:
first, chop up the soap and put it in a jar, then put the cup on the stove to heat it. When the soap melts, cut the white paper into matchbox sizes, spread the soap solution one by one, and then take it out and dry it in the shade to make the soap paper.
3. Self-made hot air balloon
1. First, we cut out 6-8 leaflike pieces of paper from soft paper.
2. Fold them in half and stick their edges together with glue 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.
4. try to adjust the speed of the hair dryer very slowly. Aim the air outlet upward at the opening at the bottom and turn on the switch. The balloon will gradually get bigger, tighten the thread and leave the desktop.
4. Self-made flashlight
The specific manufacturing method is: lift one end of a waste pop-top can (such as Lulu beverage can), and knock the other end with a round-headed hammer. Roll up two No.1 batteries with thick corrugated cardboard, and put them into the can with the positive electrode facing up and the negative electrode facing down. Find a suitable plastic lid (for example, the magic big-rolled lid can just be buckled on Lulu's beverage can), and dig a round hole in the center of the lid, 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 wire-finding, peel off the wire skin at both ends, wrap one end around the lamp holder, and pierce a small hole at the other end from the side of the plastic cover. Put the plastic lid on the can. Check whether the light bulb and battery are in close contact. The disposable flashlight will be ready here. When in use, the thumb is used to press the wire from the side wall on the unpainted weld from the can, and the flashlight will glow, and the thumb will jump off the wire and the flashlight will go out, which is very convenient to use.
5. Self-made solar cooker
Find a concave reflective bowl on a large flashlight, and cut a cylinder with a length of about 4 cm with rigid foam plastic or wood, and the diameter is just right 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 to 9 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 a foam plastic or wooden bottom plate. Sharpen both ends of a thin bamboo stick, insert one end into the column in the center of the reflective bowl, and insert a small piece of potato at the other end. Put the device in the sun, make 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 light-emitting focus. Before long, the potatoes will be cooked by the sun and smell fragrant.
6. Homemade colored candles
Material: colored crayons and wax
Method of making:
1. Find an abandoned canned beverage barrel (such as a 1.25-liter coke bottle), neatly cut off the lid and cut the wax into the barrel.
2. Put the bucket in hot water and stir the wax inside to melt it completely. It is best to use boiled water. But ask your parents for help, or do this step under the supervision of your parents.
3. Pour the molten liquid into a beautiful container (such as a heart-shaped box with a small piece of chocolate). Don't pour too much. As for the reason, look down. Of course, you have to put the thread as the candle core in the container first.
4. The original wax cooling solution, A poured the molten colored crayon liquid into it according to the method of surface painting (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-hung flower basket
Materials and tools: two Sprite beverage bottles, glue, carving knife and scissors.
manufacturing method:
1. Take off the green bottom cover of a Sprite beverage bottle, cut it into a lotus shape, turn it down and stick it to the bottle body to form a base.
2. Cut a 2cm wide green ring from the green bottom sleeve and put it on the bottle body.
3. Remove the bottleneck, and cut out a wide band of 13cm long and 8cm wide and several narrow bands of 3cm wide on the bottle.
4. Carve patterns on a 3cm narrow strip with a carving knife.