Edu-Smart learning

Here are 40 websites where you can find remote work opportunities. Each website is listed along with its link:
1. Upwork - www.upwork.com
2. Freelancer - www.freelancer.com
3. Fiverr - www.fiverr.com
4. Toptal - www.toptal.com
5. Remote.co - www.remote.co
6. FlexJobs - www.flexjobs.com
7. Remote OK - www.remoteok.io
8. We Work Remotely - www.weworkremotely.com
9. Virtual Vocations - www.virtualvocations.com
10. Jobspresso - www.jobspresso.co
11. Working Nomads - www.workingnomads.co
12. Indeed - www.indeed.com
13. LinkedIn - www.linkedin.com/jobs
14. Simply Hired - www.simplyhired.com
15. Remote Work Hub - www.remoteworkhub.com
16. Pangian - www.pangian.com
17. Remote Jobs Club - www.remotejobsclub.com
18. Dynamite Jobs - www.dynamitejobs.com
19. SkipTheDrive - www.skipthedrive.com
20. Remotive - www.remotive.io
21. Remote.com - www.remote.com
22. Outsourcely - www.outsourcely.com
23. Guru - www.guru.com
24. Remotees - www.remotees.com
25. Remote4Me - www.remote4me.com
26. PowerToFly - www.powertofly.com
27. Remotees - www.remotees.com
28. Jobscribe - www.jobscribe.com
29. Stack Overflow Jobs - www.stackoverflow.com/jobs
30. Working Not Working - www.workingnotworking.com
31. Remoters - www.remoters.net/jobs
32. GitHub Jobs - jobs.github.com
33. Europeremotely - www.europeremotely.com
34. Remote Jobs PH - www.remotejobs.ph
35. Freelanced - www.freelanced.com
36. Crowdsource - www.crowdsource.com
37. Remotepreneurs - www.remotepreneurs.com
38. Remote Workmate - www.remoteworkmate.com
39. Remote-Developer-Jobs - www.remote-developer-jobs.com
40. RemoteWork.us - www.remotework.us
Please note that the availability of remote work opportunities may vary, and it is recommended to thoroughly research each website and its offerings before starting to apply for jobs.

Happy Children's Day

Weekly lessons update Learn to lead
Learn English from American English professor .

Nations & Nationalities | -IAN endings In this video, not only provides you with the pronunciation of the nations and nationalities of most of the countries represented in the United Nations; it a...

https://youtu.be/d3EDMDN3jbM

Unpredictable #NEET 2021 Result | Marks vs Rank | cutoff Please subscribe the channel, like the video & support this new channel.Join my telegram channel for notes,study material,tricks for NEET & JEE - https://t...

WRONG EQUATION:
One morning, a teacher wrote the wrong math equation on the board. Her students laughed.
She then looked to the students, who could not stop laughing derisively. When the students began to quiet down, she said:
“I wrote that first one wrong on purpose because I wanted you to learn something important. This was for you to know how the world out there will treat you. You can see that I wrote RIGHT 9 times, but none of you congratulated me for it. But you all laughed and criticized me because of one wrong thing I did.”
People will rarely appreciate the good that you do several times but will quick to criticize when you commit one mistake.

Good morning 🌄

Hello!!!!!!!
Students find it worth for sure.
are you attending today's webinar
Extra class with Chetan Bhagat .
On our platform Edu smart learning?
Download app
http://on-app.in/app/home?orgCode=yofbr

How Many Dimensions Do We Live In?

How Many Dimensions Do We Live In?
Leave a Comment / Uncategorized / By Hanxana
The study of extra dimensions started to get famous when after the physicists presented the String Theory-theory that used to understand what is the fundamental substance of all matter and energy. String theory suggests that all the matter and energy is not made up of points or dots like structure but only tiny loops of vibrating strings.

But this is yet a hypothetical idea and no exact scientific proves for these strings is yet found. When physicists are trying to understand these strings of this new theory, they got understood that it is hard to understand the nature of these strings in a universe with 3 spatial dimensions and one dimension of time. So the question “How Many Dimensions Do We Live In?” pops out to the world.

What is a dimension?
First of all, it is necessary to understand what a dimension is. Dimensions are the coordinates we use to describe the exact position of a thing or a person. If we take a tightrope walker traveling along a rope, we can describe the position of him by using a single number because he has only one dimension to travel. He can travel only move forward or backward. When we take a chessboard, we need two numbers to describe the position of any piece within the chessboard. That means the pieces in the chessboard are moving only on a two-dimensional surface.

But when we take our hand, it has the ability to move freely forward-backward, left-right, and up-down. That means in a 3-dimensional world.

How Many Dimensions Do We Live In
Credits: Vecteezy
Is this a 3 dimensional universe?
We experience a world of 3 dimensions in our day to day life. That means we do see that everything in the world/universe has only a length, a width, and a height. So normal people other than physicists don’t even have an idea of are there any more dimensions in the universe other than length, width and height. (Physicists also do not experience extra dimensions in reality but only hypothetically.) If anyone asks the question “How Many Dimensions Do We Live In?” from a normal person, he/she would probably answer “it is 3”.

And also if we take learnings of classical physics-basically based on Newtonian physics, there we learn only the 3 dimensions of space(length, width, and height). That means in the time before Einstein presented his theory of relativity there were only 3 dimensions in the study of physics.

Is time also a dimension?
How Many Dimensions Do We Live In
Man looks at his watch to tell the time while he is waiting for a meeting with his friend.
Creator: jn-design | Credit: Getty Images
When Einstein presenting his theory of special relativity, he basically joined space and time as a fabric of space-time, in explaining gravity and many more. So he took time also as a dimension. So it changed the answer to the question “How Many Dimensions Do We Live In?” from 3 to 4.

But it does pop up some difficulties for us when understanding time as a dimension. In the other 3 dimensions, we do know that truly exist, we have 2 options in each dimension to move within.

If we take the dimension length as an example, we have 2 options-move forward or backward. Also in the dimension width to move left or right and in the dimension of height to move upward or downward. So we always have 2 directions to move when considering the spatial dimensions.

But unlike the spatial dimensions, the dimension of time gives us only one option to travel within. that means, in the dimension of time we can only travel forward. (And also we don’t really need to travel, it flows automatically.) Time doesn’t give any chance of travel backward. So it’s hard to identify ‘time’ as a dimension to us.

Think of an instance your friend asks you to meet him. Just think that he asks you to meet him at the coffee shop at 9.00 a.m. That means he(your friend) has used the 4 dimensions when explaining the event. He used the spatial dimensions (coffee shop) and also the dimension of time to describe the event. So by the way, anyhow we have used the dimension of time in our day to day life consciously or unconsciously. Therefore we can understand time also as a dimension slightly different from the other spatial dimensions.

Read also : Is all time happening at once?: Block Universe Theory

Could be there a 4th spatial dimension?
This is a quite tricky question to answer at the first sight. We do experience 3 dimensions since the birth. There is no one who has experienced a spatial dimension other than length, width and height.

But when it comes to string theory, it is a must to have 10 or 11 dimensions to understand the theory. So it does complicate the answer to the question “How Many Dimensions Do We Live In?”. But where are they, the other dimensions? Physicists are explaining that all the 10 or 11 dimensions could have existed before the big bang and at the time of the big bang somehow they have curled up so small that we can not see them. So they argue that we do experience only 3 spatial dimensions because the other 6 or 7 spatial dimensions are so tiny to observed by our senses.

Let’s take our first example of a tightrope walker walking along a rope to understand this. The tightrope walker by himself has only one dimension to travel. He or she can only travel forward or backward and he or she has no other choice. But if we consider an ant crawling on the same rope of the tightrope walker, it(ant) has 2 dimensions to travel.

And if we look into a further small level, the atoms of the rope has 3 dimensions. So on physicists argue that the number of dimensions does increases when the observer becomes tiny. So we couldn’t experience the other dimensions except the main 3 spatial dimensions since they are forever hidden from our senses. So in order to held experiments to find those hidden dimensions, the experiment must be held at the quantum level.

Why so many extra dimensions?
How Many Dimensions Do We Live In
Calabi-yau manifold. Computer artwork of calabi- yau manifold. These six-dimensional shapes are thought to be the location of the extra six dimensions (on top of the four known to exist) predicted to exist by string theory. Credit: Science Photo Library
String theorists uses the idea of extra dimensions in explaining why gravity is so weak. When comparing to the other forces like electromagnetic force, gravity is a force so weak. The gravitational force happened due to the huge mass of our planet for a small needle can be easily overcome by a small magnet by it’s own. So gravity is that much weak.

Physicists argue that this could be probably because of the existence of the other extra dimensions. According to them, the force of gravity is leaked to the other dimensions of space and that’s why it had become that much weak.

Does the existence of the other spatial dimensions could be proved?
Conservation of energy and conservation of momentum can be taken as 2 basic fundamentals of physics. The existence of the other spatial dimensions also can be proven through these laws, if physicists could held a successful experiment.

How Many Dimensions Do We Live In
Credit: MATJAZ SLANIC
The momentum and energy after a collision of two particles must be equal to the momentum and energy before the collision. So using this fundamental law of physics, physicists could explain the existence of the extra spatial dimensions if they would find a difference in the momentum and energy before the collision and after the collision. If they could find such a difference, there must be a particle that carried away the momentum and energy to an extra dimension.

Physicists are holding these types of experiments at the CERN’s Large Hadron Collider in order to find evidence of the extra dimensions. So it is much harder to give an exact answer to the question “How Many Dimensions Do We Live In?”.



Search for:
Search …
Recent Posts
How Many Dimensions Do We Live In?
Is Intergalactic Travel Possible?
Will We Ever Leave Our Solar System?
Can a Black Hole Kill You?
Does time stop in a black hole?