Tech With Rob

Hi Guys, today I am going to post about :- Is Time Travel Possible ? So in my post ' The Grandfather Paradox (Answer) '  I had asked you that can we travel in time ?? ---This going to be a very small post. Yes , time travel is possible . It is easy to travel into the future compared to travelling into the past . But we can't now travel in time , but we can travel in time in the future. You may have many questions about this, I will tell you about the concept of time travel in my future posts. THANK YOU  

Hi Guys, today I am going to post the answer of :- THE GRANDFATHER PARADOX   If you have not read my first post on 'The Grandfather Paradox'  then click the link below :- https://rugber.blogspot.com/2020/05/Grandfather%20Paradox.html   So let's start............................ I believe that you might have read the post mentioned above.  So when you travel back in time to the childhood of your grandfather's period , you reach in a different universe (dimension) , I have told about this in my post about ' The Parallel Universe '. The level-3 parallel universe and also told you that every decision takes you into a different universe . Like that when you travelled back in time, you reached in a different universe and you did not killed your grandfather , but the grandfather in a different universe .  And the grandfather in your universe will be safe , Hence your father will be born and you will also be born . So, you will not die if you went into th...

Hi Guys, today I am going to post about :- THE GRANDFATHER PARADOX   So now let's look at the grandfather paradox :- The grandfather paradox is related to time travel . What is time travel ?  In short, time travel means going into the future or the past like Doraemon , my favourite cartoon. Imagine that you have a time-machine , and you travelled back in time to your grandfather's childhood's period . And you killed your grandfather .  Then If your grandfather was killed in his childhood , then your father would not have been born and you also would not have been born,  then you would not have gone to the past to kill your grandfather . Then your grandfather would not have been killed , and your father would have been born . Hence, you would have been born. .............................. And the loop continues ... This is called the grandfather paradox. But wait, if you kill your grandfather, will you be alive ???? Can you solve this paradox?...

Hi Guys, I have changed my blog's name into :- Tech With Rob Logo How is the name ????   Do comment below.....................

Hi Guys, today I am going to post about :- PARALLEL UNIVERSE Universe Prallel universe is a theory which simply says that there many other universes (multiverse) other than our universe ... In this universe  at this time you are  reading , but in the other universe you might be a sleeping , eating  or anything you can think about or you might have not been born yet. So in simple words we can say that parallel universe is a dream land where everything is possible .  Scientists have divided the parallel universe  into 4 levels :- 1) In this level there are many copies of yourselves in different universes , doing different things, like I told you before.  And the rules of physics and nature is same in all these parallel universes . Parallel Universe (Level-1) 2) In this level it is said that all parallel universes including our universe  is inside a big bubble . These bubbles either breaks or joins together to form a new parallel univer...

Hi Guys, today I am going to tell you about :- HOW IS THE UNIVERSE EXPANDING ? You all might know about the big bang theory , if you don't know about the big bang theory then click the link below :- https://rugber.blogspot.com/2019/10/how-universe-was-formed-big-bang-theory.html So you all might know that our universe is expanding very fast, greater than the speed of light.   According to Einstein no object can travel faster than the speed of  light , So does the expansion of the universe violates einstein's theory ?? Not really, the object on the universe can't travel faster than light but the universe itself can expand faster than light . The expansion of the universe should have stopped in some years after the big bang , but the expansion has not yet stopped . Why?? Why is the universe still expanding ??   The universe is still expanding due to a mysterious force called the dark energy , scientist yet don't know anything about the dark energy .   ...

Hi Guys, I am thinking that I should tell you about Nanotechnology . If you want to learn about Nanotechnology, then comment down below. Only If you comment, I will introduce to you the world of nanotechnology. THANK YOU  

Hi Guys, today I am going to post the second part of SPIDER-MAN CLIMBING SUIT (PART-2) If you have not read part one then click the link below https://rugber.blogspot.com/2020/05/Spider-man%20climb.html So I had told you that we can't make structures of that small, but we can really make structures that is small as few nanometers using nanotechnology . But the other problem is that we should cover over whole body with these small hairs, is this the end of our dreams ??? Not really, if we reduce the diameter of the structure to one nanometer. But we can't make structures of one nanometer (It might be possible in the future). There is a substance, whose diameter is only one nanometer - Carbon Nanotubes Therefore, if we used carbon nanotubes the total Van Der Waals Force will increase. But, this force is not enough to climb on walls. So, this is the end of our dreams.    I can't believe this, but what if we increase the force between two poralised atoms (Van Der Waals Force). ...

Hi Guys, today I am going to post the second part of :- WILL EARTH FALL INTO THE SUN ? (PART-2) If you have not read the posts related to this topic, then you can click the links below :- 1) Centipretal And Centrifugal Force  https://rugber.blogspot.com/2020/05/Centripetal%20And%20Centrifugal%20Force.html 2)  Will Earth Fall Into The Sun https://rugber.blogspot.com/2020/05/.Is%20Earth%20In%20Danger%20.html I believe that you might have read the above posts.  As the centifugal force increases, the marble will revolve around the object for a longer period of time. And when centrifugal and centrifical forces become equal the marble will obtain a steady orbital path around the object until an external force is acted on it. Note that the, Centrifical force is the curvature of the space-time fabric (Gravity). And if the speed of the earth increases then it will escape the force of gravity. THANK YOU

Hi Guys, today I am going to post about :- SPIDER-MAN CLIMBING SUIT I have already told you that we can climb using technology and also how do spiders climb wall. If you have not read it then click the link below   https://rugber.blogspot.com/2020/05/How%20do%20spiders%20crawl%20.html                                                           and https://rugber.blogspot.com/2020/05/Van%20Der%20Waals%20Force.html So if we make a gloves which has small hair like structures which is only a few nanometers thick, then there is a chance, that we could climb the wall like spider-man. The few nanometers thick hair will increase the surface area of contact, increasing the Van Der Waals force. This force will oppose the force of gravity, hence climbing the wall. But the problem is that we can't make structures (hairs) this small. And to oppose gravit...

Hi Guys, today I am going to post about :- THE VAN DER WAALS FORCES Van Der Waals force is a intermolecular force. You all might know that unlike charges attracts each other and like charges repels.   And you also know that atoms are generally electrically neutral.  See the image below   You can see there are two atoms labelled as atom-1 and atom-2 , when they are brought very close, the electrons in atom-1 tend to stay away from the electrons of atom-2 (Due to repulsion of like charges.) creating a poralised atom as shown in the image below Polarisation is a process in which atoms are brought near to each other for creating a positive and negative side of a atom. The attraction between the positive and negative side of 2 atoms is called Van Der Waals Force. I could not explain this concept very well, so watch the  below video   https://www.youtube.com/watch?v=7XiQ1PvsTQ8 Very Very Sorry. Comment down below if you want that I should again try to explain it to y...

Hi Guys, today I am going to tell you about :- CENTRIPETAL AND CENTRIFUGAL FORCE Centripetal force and centrifugal force are forces that act on a object moving in a circular path. As you can see in the below image that the direction of the stone is constantly changing. You might know that for changing the direction of a moving object a force is required, this force is called the centripetal force.   And in the below image you can see that the centrifugal force acts outwards of the circlar path. You might have experienced this force in the merry-go-round, you will feel that someone is pushing you out of the merry-go-round, which is called the centrifugal force.   In the below case, if the centrifugal force increases then the thread will break and the stone will travel in a straight path. You might have noticed that as you increase the speed of the round, the more centrfugal force is produced, and if you didn't hold in tight then you will fall from it, because the centrifical fo...

Hi Guys, today I will tell you the answer of the question that I asked in my post called 'How Does Gravity Work ?' WILL EARTH FALL INTO THE SUN ? If you have not seen my post 'How Does Gravity Work' then you can click the link below ---  https://rugber.blogspot.com/2020/05/Space%20time%20.html From the space-time fabric you made you might have noticed that the marble falls back to the obect, then will earth also fall into the sun ? To know this we should learn about two forces that acts on a object with circular motion :- 1) Centripetal Force 2)  Centrifugal Force I will tell you about these 2 forces in my next post for a clear understanding. For now you only need to know that as the speed increases the time taken to collapse into the object will also increase and at a speed the marble will never collapse. And the speed of earth is 67,000 miles per hour means more than the speed of the marble, so earth will stay in a fixed circular path. If the speed of the earth g...

Hi  Guys, today I am going to tell about :- HOW DO SPIDERS CLIMB WALL ? I have told you that there is still a chance to become SpiderMan using technology. So now, How does a spider climb the wall ? If we zoom into the spider's leg we can see small hair like structers called spatulae  which is only a few nanometers thick. These tiny hairs increases the area of contact of the spider's leg and the wall. All smooth surfaces are not really smooth in the microscopic level. When we touch a surface, there are minute gaps between the finger and the surface in the micropic level. Therefore these tiny hairs increases the surface area of contact. You might think that by increasing the surface area how can spider's climb wall. So to know the answer we should look at molecular forces, the Van Der Waals Force . I will tell you about the Van Der Waals force as soon as possible. THANK YOU