What is the most arduous and least successful discipline in human history so far?

It's still the universe, it's too expensive, it's all a big project.

The problem of human aging, from the ancient alchemy to the development of modern medical technology, cannot fundamentally solve the problem of anti-aging.

Physics and mathematics are both the toughest subjects.

Astronomy, astrophysics, physics, etc.

Physics, it seems that physics has made the least achievements.

Chemistry, starting from alchemy, every new discovery has to kill a group of chemists, and they are all the top. And now there are thousands of discoveries, and hundreds and thousands of theories, and then half of them are exceptions.

This is physics, and physics is the hardest.

It should be astrophysics, physics, etc.

China's four major inventions: papermaking, printing, the compass, and gunpowder.

Papermaking, gunpowder, compass, movable type printing.

Gunpowder, compass, papermaking, movable type printing.

I can't remember paper, gunpowder, printing, and more, and I don't know if the compass is right.

Papermaking, gunpowder, movable type printing, compass.

(Watson Watt) based on the invention (radar).

The Wright brothers) invented (airplanes) based on (birds).

Fulton) based on the invention (boat) of (small fish).

1. (The boat) was invented based on the (small fish);

2. (The airplane) was invented based on (the bird);

I know of the first case in which Professor Shepiro found a problem in the whirlpool of bath water, and through repeated trials and studies, he found that the direction of rotation of the whirlpool of water is related to the rotation of the earth. The second example is the famous British chemist Boyle accidentally discovered that hydrochloric acid can turn flower petals red, and then conducted many experiments, and finally invented the acid-base test strip. In the third case, an Austrian doctor deduced from the phenomenon of his son's eyes moving when he dreamed, and after repeated observation and analysis, he deduced that the eyes of all sleepers indicate that they are dreaming.

Edison invented the electric light based on the electric bubble fish.

Write in four paragraphs.

First paragraph: Write what I'm going to invent.

Second paragraph: What is it like to invent something.

Paragraph 3: Why did I invent this thing.

Paragraph 4: I'm going to invent what kind of prospects this thing will have when it is realized.

My suggestion is to invent something that does not exist now, idealize it yourself, and it is difficult to realize it, it doesn't matter, the main thing is to imagine it richer.

Write about what you want to invent, this essay is easy to write, I wrote it when I was in fifth grade, and I'm in sixth grade now.

(Watson Watt) based on the invention (radar).

The Wright brothers) invented (airplanes) based on (birds).

Fulton) based on the invention (boat) of (small fish).

The Wright brothers built the first airplane, the electric light, which was invented by Edison, and the inventor was Alexander Bell, an Englishman, and Martin Cooper, the inventor of the mobile phone.

Airplanes were invented by the Wright brothers, electric lights were invented by Edison, and ** were invented by Bell.

You have a sick brain, 7161 says yes and you don't adopt it, others say hello and you adopt it, you have in your brain.

The Wright Brothers, Edison Bell.

Is there a better essay to say quickly, say quickly, say quickly, and say quickly.

1) From fireflies to artificial cold light;

2) Electric fish with volt battery;

3) The downwind ear of the jellyfish, imitating the structure and function of the jellyfish ear, designed the jellyfish ear storm ** instrument 4) According to the visual principle of the frog's eye, people have successfully developed an electronic frog eye.

5) According to the principle of the bat ultrasound locator, people also imitated the "pathfinder" for the blind.

6) An incomplete photosynthetic device that simulates cyanobacteria will be designed to bionic photolyzed water, so that a large amount of hydrogen can be obtained.

7) Based on the study of the muscular system and bioelectric control of the human skeletal and muscular, a human augmenter - a walking machine has been imitated.

8) The hooks of modern cranes originated from the paws of many animals.

9) The roof corrugated roof mimics the scale armor of animals.

10) The colloids produced by shellfish from their proteins are so strong that they can be used for everything from surgical sutures to ship repairs.

11) The oars imitate the fins of a fish.

12) The sub-learns is the praying mantis arm, or sawgrass.

13) Xanthium was inspired to invent Velcro.

14) Lobsters with a keen sense of smell provide ideas for people to make odor detectors.

15) Gecko toes offer an encouraging prospect for making sticky tapes that can be used over and over again.

(Watson Watt) based on the invention (radar).

The Wright brothers) invented (airplanes) based on (birds).

Fulton) based on the invention (boat) of (small fish).

Bell invented the Latte brothers based on the fact that the spiral coil makes noise when the current flows and cuts off, and the Rattle brothers invented the airplane according to the bird.

Watt invented the steam engine based on boiling water.

Ban invented the saw based on sawgrass grass.

The meaning of the paragraph is as follows:

The first paragraph (1-2): introduces the time of the Nobel Prize awarding ceremony (the time of Nobel's death) and the origin of the Nobel Prize.

The second paragraph (paragraphs 3-9): Write about the history of Nobel's invention of explosives, for which Nobel invented the first detonating device in human history, the "detonator". Later, with the addition of detonators, explosives were successfully invented.

Paragraph 3 (paragraph 10): Nobel made a will to deposit all the prize money and royalties of his invention in a total of 2 million pounds in the bank, and awarded the most outstanding achievements in each of the five fields with annual interest as a prize. This is where the Nobel Prize comes in.

Paragraphs 1 to 2 provide an overview of the Nobel Prize awarding ceremony.

The three to nine natural paragraphs focus on the huge price paid by Nobel for inventing explosives.

The tenth paragraph briefly introduces that Nobel made a will and established the Nobel Prize, which echoes the beginning.

He has been interested in explosives since he was a child, and when he grew up, he invented explosives.