Maybe. Ensures dreaming, imagining. Many animals experience REM sleep. But whether they all dream or not or what it looks like is still a matter of research. Many mammals such as dogs, cats, rats, monkeys probably dream. Birds also experience REM sleep. But there is confusion about dreaming. But crows think very complex crooked thoughts.

James Watt is often said to be the father of mechanical engineering because it was that particular invention that gave way to many more important developments of the industrial revolution and beyond.

James Watt’ s invention was also central in the development of the profession of mechanical engineering.

Many have seen the movie Three Idiots. At the very beginning of the movie, actor Boman Irani, who plays a teacher named Virus, shows a pen to all the students. Which was basically an astronaut pen. Basically, ballpoint pens cannot be used in space, so astronaut pens are used there. Then actor Aamir Khan asked the virus, then why can’t pencil be used?

First, why can’t a pen be used in space? For those who understand gravity, the answer is not too complicated. When we keep the lip of the pen down and the back of the pen up, the upper inks tend to push down or fall due to gravity. When writing with a pen, when the ball on the lip rotates, the ink pressed on the ball repeatedly sticks. As a result, the ink sticks to the page of the ledger and the writing is visible. Similarly, if we keep a pen upside down (back side up and lip down), then after some time the ink of the pen will come out from the backside. Many of us have done this carelessly. Many people’s clothes have been ruined by that ink. However, a solution to this problem has been made at present. After the pen is filled with ink, the hole at the back is closed with an adhesive substance so that even if the pen is put upside down in a pocket, the ink cannot come out. You see, the main mechanism here is the ink being pushed down by gravity. If the ink was not pressed down, the ink would not stick and writing would not be possible.

Now, since there is no gravity in space, the ink will not stick in a certain direction. So there is no need for continuous ink. And so it is not possible to write there. So we can’t use a pen in space.
Since a pen cannot be used, then we can use a pencil. Because the pencil does not need gravity. As though in the movie, Aamir Khan asked the question about the virus. In fact, even a pencil cannot be used in space. Although in the early days of space travel, Russia and America used pencils in space. But unfortunately, pencil nibs are made of graphite. Which is a very good conductor of heat and electricity. Fragments of a broken pencil nib in zero-gravity space can cause much bigger problems. For example, they can get into different electrical equipment and cause short circuits. A fire can occur in an atmosphere containing pure oxygen within the capsule.

After an explosion in the Apollo 1 cabin caused all the astronauts to burn to death, NASA was looking for writing material that wouldn’t pose a fire risk. Then Paul C. Fisher’s pen-making company Fisher Space Pen Company budgeted millions of dollars to make this pen. Then NASA bought each pen for just 2.95 cents. Within a few days, the Russians also started using this special pen instead of the pencil. Which will work from below zero to 300 degrees centigrade temperature.

The people who are most worried about AI are the people who think, “So good, not so good.” However, the real job of AI is to act as your personal assistant. The Italian government has shut down ChatGPT, out of concern for privacy. For the last 20+ years, the Sers engines have thrown people’s data to shreds, where nothing has happened.

It is possible to take a lot of data from Android phones. And if you look at the permissions that need to be given while installing the messenger, the president of Italy seems to be going to the era of buttons. There is no peace there either, mobile operators can record calls if they want to.

The management of all major tech giants has a lot of political influence.

The real point is to save time. The output that the man of yesteryear would have given if he lived for 100 years, the man of today can produce much better output than if he lived for 20 years if he knows how to use the surrounding resources properly.

I am not against AI by any means. The more research is done on this, the more output the world will be able to produce in a shorter period of time.

Explanation of Archimedes Principle

The Greek mathematician and famous physicist Archimedes discovered that when an object is immersed in a liquid or gas, the object appears to lose some weight. For example, if you cannot lift a tree stump when it is on the ground, you can easily lift it when it is submerged in water. That is, it will seem lighter to you or the object will seem to have lost weight. Archimedes explained this lost weight. He discovered that the weight lost by an object when immersed in water is equal to the weight of liquid or gaseous matter displaced by the object. This is called Archimedes’ principle.

This simple explanation is that if you submerge a wooden block weighing 100 kg and having a volume of 40 liters in water, the wooden block will occupy an area equal to that of 40 liters of water or displace 40 liters of water if fully submerged. Since the object is displacing 40 liters of water, the object will also lose 40 kg of weight by submerging in water. That is, as a result of immersion in water, the weight of the object will decrease from 100 kg to 40 kg to 60 kg.
You will surely understand now, you can even wash this wooden doll weighing 100 kg in water if you want. If you make a wooden box out of that 100 kg wooden block, the volume of the box will increase even if it weighs 100 kg due to leaving a lot of empty space inside the box. Assume that you have made the volume of the box 120 liters by leaving empty space inside. Now by immersing this box in water, it will displace 120 liters of water.

But the weight of the box was 100 kg, there is no chance to lose an extra 20 kg weight. So the box will not completely submerge in water. Ships or boats are basically made from this explanation. Ships or boats weigh much less than the amount of water they displace.

Buoyancy or upward force
From Archimedes’ formula we know that when an object is immersed in a liquid or gaseous substance, the object seems to lose some weight. Because the upward force of water acts on the sinking object. This upward force of water is called buoyancy.

Mathematical equation of buoyancy
The mathematical equation of buoyancy is,
F = Vdg
F – is buoyancy or upward force.
V – is the volume of submerged object.
d – is the density of the submerged object.
g – Gravitational acceleration.