History of physics

Introduction History of Physics 1. The invention of the telescope One day in June 1608, Galileo heard that a Dutchman had assembled a convex mirror and a concave mirror and made a toy capable of doing so.

History of physics

1. The invention of the telescope

One day in June 1608, Galileo heard that a Dutchman had put together a convex mirror and a concave mirror and made a toy. That night, Galileo sat down at the table and lit candles one after another. He thought again and again and wondered why two of these lenses together can have a magnifying effect. At dawn, Galileo decides to make one himself.

He found an empty tube, embedded a convex mirror on one end and a concave mirror on the other end, and made a small telescope. When you pick it up and look at it, you can enlarge the original object three times. Galileo wasn't satisfied, so he improved again and made another one.

He took the telescope and ran to the beach, only to see the vast sea with rolling waves and not a single boat. When he took the telescope and looked again, a ship was approaching the shore offar. Practice has proven that it can amplify eight times.

Galileo continued to improve and create, and eventually his telescope was able to magnify the original object thirty-two times.

One night, moonlight filled the earth and Galileo took his telescope and pointed it at the moon. Hey, the moon isn't as smooth and flawless as people have said for thousands of years. It is like the earth, with mountains, deep valleys and volcanic fissures!

2. Free Fall Movement

People noticed the problem of falling bodies early on. Before Galileo, Aristotle's theory in ancient Greece believed that objects fell at different speeds. Its falling speed is proportional to its weight. The heavier the object, the faster it falls. For example, an object weighing ten kilograms falls ten times faster than an object weighing one kilogram.

For more than 1,700 years, this doctrine which violates the laws of nature has beentaught in books and on the podiums of schools like the Bible, and no one dares to doubt it. Indeed, Aristotle proposed the “Earth-Centered Theory,” which was consistent with the interests of the slave-owning class and the feudal ruling class. Therefore, Aristotle's other theories were also protected.

Galileo chose the Leaning Tower of Pisa as its test site. One day, he took two solid iron balls of the same size but different weights, a solid iron ball weighing one hundred pounds and a hollow iron ball weighing one pound, and climbed the leaning tower more than fifty meters high. Under the tower, there were many people coming to watch. Everyone talked a lot and some made fun of him: "This young man must be crazy, let him go wild! Can Aristotle's theory still be wrong?"

I saw Galileo appeared at the top of the tower, Holding an iron ball in each hand, he createdié: “The people below can see clearly, the iron ball has fallen. He opened both hands at the same time. People saw that the two iron balls fell in parallel and landed on the ground almost at the same time. Those who made fun of him were stunned.

3. The Law of Universal Gravity

Newton was alone in the orchard at home, while he was walking and thinking about a problem, he accidentally came across an apple tree in the orchard. . At that moment, an apple fell on his head. Newton suddenly woke up from the problem and picked up the apple. At that moment, he asked himself another question: why did the apple fall to the ground instead of floating in the sky? Ultimately, Newton proposed a universal law that produced the simplest phenomenon: universal gravitation.

One day, the nanny was going out. Before leaving, she told Newton: "I have something to do. I'm going out firstr. If I'm hungry, go boil some eggs. I've boiled some water." The nanny came back and found Newton taking a pocket watch. She went to cook. But Newton was working on inventions. This story tells us not to get too involved in one thing and to stop when it is time to stop

4 Watt's story

In the middle of the 18th century, there was a professor named Ridder at l. 'Glasgow University in England one night he invited Watt into his office and said to Watt: "I know you are a very clever machine repairman, and I want to ask you to do me a favor." /p>

Watt said: "How can I help you?"

Professor Reid said: "My set of machine plans has been stolen. But it is very difficult to build this machine according to the plans. The person who stole the plans will definitely come to you to help you with the treatment. If this person comes to see you,please tell me."

At this moment, a young assistant of the professor came in with a kettle and prepared a cup of coffee for each of them. . The assistant put the kettle on the stove, closed the door and went out. The professor got up, walked to the door and locked it

The professor and Watt were drinking coffee and talking about the professor's drawings. Gradually Watt felt dizzy. He guessed there was something wrong with the coffee. He only felt weak and fell asleep after a while. Watt woke up, it was already the next day. When he opened his eyes, he saw that Professor Risted was dead. There was a five-centimeter-long needle with a cap on the professor's neck. with support and went to open the door, only to find that the door was locked and the key was on the professor's body. Watt remembers what happened last night.I don't suspect it was the assistant who did it.

But the assistant went out and never came back. Who put the needle in the professor's neck? He looked at the poisoned needle and the cap on the professor's neck for a long time, and finally understood: when water vapor expands, its pressure is nearly a thousand times that of water.

When the assistant put the kettle on the stove, he put a cork with a poisoned needle in the spout and pointed the spout at the teacher's neck. When the water boiled, with the spout blocked by the cork, the steam pressure continued to increase. Eventually, when the steam pressure reached a certain level, the cork shot out with a poisoned needle, hitting the professor.

After police arrived, Watt shared his thoughts. After police investigation, the murderer was the professor's assistant. Later, Watt was inspired by water vapor and inventedthe steam engine.

5. Faraday's Story

Faraday was born on September 22, 1791 into a family of blacksmiths in Newington, Surrey. At the age of 13, he worked as an apprentice newspaper delivery boy and book binder in a bookstore. He has a strong thirst for knowledge and takes all his time off. He eagerly tried to read all the books and documents he had bound from the beginning.

After reading, I also copied the illustrations and took careful reading notes. I used a few simple utensils to conduct experiments according to the book, carefully observed and analyzed the experimental results, and transformed my attic into a small laboratory. . After staying in that bookstore for eight years, he forgot about food and sleep and studied voraciously. When he later recalled this period of his life, he said: "It was during my free time that I began to find my philosophie in these books.

Two of these books were useful to my personality. One is “Britain”, “Encyclopedia”, from which I learned about the concept of electricity; the other was Madame Massey's "Chemical Dialogues", which gave me the scientific basis for this course."

Faraday was mainly engaged in research on electricity, magnetism, magneto -optics and electrochemistry, and made a series of major discoveries in these fields After Oersted discovered the magnetic effect of electric current in 1820, Faraday proposed the bold idea of ​​"generating electricity by. from magnetism" in 1821 and began arduous exploration

In September 1821, he discovered that a live wire could rotate around a magnet and that the magnet could rotate around a. current-carrying conductor For the first time, he achieved the conversion of an electromagnetic field into a dom electromagnetic field.mechanical groin, thus establishing a laboratory model of an electric motor.

After many failed experiments, the law of electromagnetic induction was finally discovered in 1831. This great historical discovery allowed humanity to master the methods of mutual conversion of electromagnetic energy, of mechanical energy and electrical energy, and became the basis of modern generator, motor and transformer technology.

My 50J Magic Way is to beat the king alone. Now I can beat the Tavern King and the Thief King alone. Uh. . . . . . Magic is a fixed damage profession, so intelligence is essential in Magic!

I turned it on and added some. It depends on your preferences. I like to use high damage ultimate moves.

The other must-see is the magic show What? Some people say that magic shows are useless? The ballhe magic star without magic show has a 6 second cooldown. Is it added? This should take more than 4 seconds (I estimate, I haven't ordered it complete yet). This skill is very BT! What is the concept of saving 2 seconds! All the experts know this.

All magicians know about lighting. Increased intelligence.

Then for the upgraded light magic star ball, I think +15 or +18 is enough. Of course this is my own addition, you can ignore it.

To be user-friendly, you have to fill it out! This passive skill is the best skill for increasing success in magic. Even if you add a lollipop, it will get cold!

The fire and light system is full. If you are no longer awake, I tell you that you also need to order ice and darkness to get closer to a 2J.

The first. no one said I was speechless. Magic is bullshit! Do you know?

Meth powder, I ordered ice powder to get out of the car. Meth powder is very BT, not as good as Poison King, but still good if you order it high you will. be poisoned by sweeping a few brooms. If you don't like using it, I advise you not to order it or order less. If the ice powder comes out of the cart, just order it for me!(Threatening ING with a knife)

I only have one shield straw, and there seems to be one in bonuses.

I think the provocative doll Shu Lulu is +10

Improved Shu Lulu, level 15

The lava bottle, level 12 I think you are a glow of fire when I add it like this +15 is pretty good

Fiery furnace, level 11

Lucky lollipop, level 5

Magic Acid Rain Cloud, Level 5< p>Frost Drill Car, Level 5 (I want to complete the whole thing! I specialize in ice and lumier!)

Electric Eel Collider, level 8 (you're a light major, +8 is not bad)< /p>

Just add the rest to the foreground. These are your main ones, so I'll mention them. However, I advise you to use this addition to try to add times in the simulator that I have positioned. it is based on damage data from. SP forgot hehe.

Cloth Armor Mastery, Level 1

Jump Back, Level 1

Forced - Jump Back, Level 1

< p>Crouching, level 1

Clothes, Northmar intelligence kit, I forgot it after hearing what the others said.

Popular Costume (the one I currently plan to use)

Daphne Sage in Black Bamboo (no explanation)

Leather Armor Trouser Belt Norsmal Shadow Slayer these two pieces.

Storm God Clothing

Purple Rain Soul Fixing Shoulders and Northmar Poxi Cloth Armor Boots are intended foru public. I follow the audience and my fashion is a mix of high and low. END.

The hat is off, the hair is the same, I learned the dark anti-gravity for clothes, the maximum MP for pants, the movement of shoes, the two speed boosts d attack, size to increase escape, the skin does not want me! I have neither skin nor face!

There is another additional method that I tried on the simulator: the light and fire lighting system! This is a method of adding points to the lighting and shooting system that has been agreed upon with the members of the Magic Guild. Now I'll give it to you

You'll have 26 SP left

.

Four small elemental skills +5

< p>Magic show +10 Elemental ignition +10

Shield straw +1

Magic star bomb +5 without explanation< /p>

Shululu +5

Improved Shu Lulu +18 (this move is very good)

Lava +16

Stove+11

Upgraded Magic Star Ball +20

Broom +5

Generator +8

Lollipop +5

< p>Cloak + 1

Light and Fire Affinity + 10

Crouching +1

Ancient +10

You can modify it yourself -even if you add points without alarm clock.

Tips: Magic Way's upgraded Shu Lulu is really good~

Buy Molotov Cocktails and Bombs

Using the Ice Dragon as an example, Shu Lulu attracts the Ice Dragon Before putting 2-3 Molotov cocktails

After that, we put Shululu

Forget it.Good time, we put 2 Molotov cocktails while waiting. When the time is about to explode, drop the bomb, once~ Hehe, you will know by watching Baidu's test video. This trick is the signature of magic.

There is also a rotating broom. You need to prepare advanced paralyzing medicine before using the spinning broom, what happens if it fails? Increase your blood and magic! The jarion of blood that I received for free, I usually don't use the paralyzing potion anymore, I have already mastered it. You know what I'm talking about, I don't know if anyone has used this trick. I saw it. I invented it myself. Well, let's just say it was a lot of torture. I am a magician from District 4 of North China. If you are interested, please contact me. Isn't this the same district? Baidu, contact me!

I don't like the show, so you always want to be violent. Only when the cooling is weak can it be called real violence.

There is no violence. a thing like me that doesn't turn on the lights. Look at the others for yourself.

  • Popular Focus
  • Where is the cheapest battery wholesale?

    Where is the cheapest battery wholesale in Tangxia, Sanyuanli, Baiyun District? There is an enterprise specializing in the independent production of electric vehicles in Tangxia, Sanyuanli, Baiyun District, Baiyun Sanyuanli Avenue, Baiyun Sanyuanli Street
    08-02
  • Understanding 18650 Voltage: A Comprehensive Guide to Lithium-Ion Battery Power

    Lithium-ion batteries have become the backbone of modern portable electronics, providing the energy needed for everything from smartphones to electric vehicles. Among the various types of lithium-ion batteries, the 18650 battery stands out as a popular ch
    08-27
  • What are the materials of the negative electrodes of lithium batteries?

    What are the materials of the negative electrodes of lithium batteries? The main commercial applications of lithium batteries include graphite, which is a sheet of copper used to guide current and which does not react. another safe
    08-02
  • The difference between 18500 and 26500 batteries

    What is the difference between 18500 and 26500 batteries? The answer above is 18650. The person asking the question should ask what is the difference between 18505 and 26500 batteries. In the case of Fuant ER1
    08-02
  • What does 3.7V 80mAh written on a lithium battery mean?

    What does 3.7V 80mAh written on a lithium battery mean? 3.7 V, 80 mA = 0.08 A, H means 1 hour, or 3600 seconds. Taken together, it is
    08-02
  • How long does a lithium battery (cell phone battery) last?

    How long does a lithium battery (cell phone battery) last? The lifespan of mobile phone batteries, under normal conditions of use and without serious impact, the lifespan set by the manufacturer must be 5 years.
    08-02
  • Will lithium batteries explode when charging?

    Will lithium batteries explode when charged? Will lithium batteries explode when charged? Lithium battery explosions usually occur during the charging process, because the negative electrode material of lithium batteries is graphite or other carbon materi
    08-02
  • Parameters of lgdas31865 lithium battery

    Parameters of lgdas31865 lithium battery The parameters of lgdas31865 lithium battery are as follows: LGDAS31865 is a model 18650 lithium battery with a capacity of
    08-02
  • What are the main components of lithium battery electrolyte?

    What are the main components of lithium battery electrolyte? The composition of lithium battery electrolyte is shown below. 1. Ethylene carbonate: molecular formula C3H4O3. Colorless transparent liquid (>35℃), room temperature
    08-02
  • Who are the lithium battery manufacturers in Shandong?

    What are the lithium battery manufacturers in Shandong? Shandong Shengyang Power Supply Co., Ltd. and Shandong Weineng Environmental Protection Power Technology Co., Ltd. 1. Shandong Shengyang Power Supply Co., Ltd. is located in Shengyang, Qufu City.
    08-02
  • Types of drone batteries available in 2024

    Part 1. Types of drone batteries available in 2024In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in
    07-30
  • How long does it take to charge 26650 battery?

    How long does it take to charge a 26650 battery? The charging time for a 26650 battery is generally between 3 and 6 hours, but the precise time depends on the power of the charger and the capacity of the battery. in general
    08-02
  • For what?Sure, here's an article based on the phrase "For what?

    The simple yet profound question, "For what?" often serves as a gateway to deeper reflections on purpose and intention. It is a query that invites us to delve into the reasons behind actions, decisions, and circumstances that shape our lives and the wor
    08-02
  • Choosing the Right Cart Battery

    This comprehensive guide will walk you through everything you need about cart batteries, from understanding different types to making an informed purchase decision.
    08-02
  • 30mAh~500mAh 3.7 V Li-ion Battery

    Welcome to Ufine's collection of 3.7V lithium-ion batteries ranging from 30mAh to 500mAh. Explore a diverse range of compact and lightweight batteries suitable for various electronic devices,
    08-02
  • Here are 10 essential facts about drone batteries for 2024.

    10 Key Facts About Drone Battery for 2024 In 2024, drone batteries have advanced significantly, offering a range of options to cater to various needs in the consumer, commercial, and industrial sectors. Below are the primary types of drone batteries avai
    08-02
  • Could you please explain the difference among IMR, ICR, INR, and IFR 18650 batteries?

    What is the Difference Between IMR, ICR, INR, and IFR 18650 Battery?In 18650 batteries, discerning the differences among IMR, ICR, INR, and IFR types is fundamental for tailored and efficient battery usage. These distinct
    08-02
  • Safety considerations for cart batteries

    Selecting the ideal cart battery is crucial for ensuring optimal performance and longevity of your electric vehicle or vaping device. This comprehensive guide w
    08-01