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Yes! Teaching a topic to someone else, makes our understanding in that topic to be more developed. In my experience, when i tend to recall some topics,which i have learned quite long ago,i would teach that topic to myself. It will seems to be funny but, it works for me all time. this peculiar activity, made me to sum up more topics with better understanding and doesn’t make me tried of studying.
From my perspective or reference frame, the density of the moving block would be higher than the stationary one. Density=mass/Volume , and as per the energy-mass equivalence , the mass increases by the gamma factor and since the block speeding by me relative to myself ,its dimension which is towards the direction of the motion get lorentz contracted according to me and so the volume will be decreased [ since, volume= area*height] by the same gamma factor. so it is concluded that the the density of the moving block increases.
Absolutely NO! Due to the length contraction, angle of the mountain differs for me and George, as the length contracts at the direction of the motion ( direction opposite to the velocity of the train relative to George) .So, the measurement of the slope of the mountain by me and George will not agree with each other.From George’s perspective, The Mountain would be steeper than it would be in my perspective.
Yes. the past and the future does exist and it is true.But the real question is, what is the present?. What is actually the ‘Now’ moment?. Since the time itself, is proved as relative by various theoretical views and experimental supports, The moment of present is uncertain and also relative. If only when the present is completely precised, The moment of so called,’past’ and ‘future’ will be determined.
Time dilation does not provides longer life time.It provides life time at slower rate, which would be completely normal to one,when He/She undergoes the speed that can cause a time dilation at sufficient amount so that, it is quite measurable. Even though, all of our biological clocks ticks almost at the same rate. So, on conclusion,when we experience time dilation due to our motion, we won’t live longer ,but we were seems to be live longer in the perspective of stationary one. After all, we Humans, can’t reach the speed, so that we experience time dilation.
Yes! It made to feel amazed, that how a single constancy, the speed of the light, makes the whole act of simultaneity as relative and is respect to the state of motion of the observer. And, it also completely bashed the Newton’s mechanics at the ranges of lightspeed and his understanding of time as universally same to the statement,”TIME IS RELATIVE”
Yeah! It completely made to feel amazed, that how a single constancy, the speed of the light, makes the whole act of simultaneity as relative and is respect to the state of motion of the observer. And, it also completely bashed the Newton’s mechanics at the ranges of lightspeed and his understanding of time as universally same to the statement,”TIME IS RELATIVE”
We experience day and night cycles on earth. It is the direct evidence for the rotation of the earth. But, in terms of relative motion, we can’t say it in that way. But,stars , other than sun , which are distant to us, and their reference frame wil say that that the earth is rotating anti-clockwise. Eventhough, it is not always right that the earth is an inertial frame. But, to avoid the complications, regarding to the conceptual explanations , we can say that, it is approximately inertial.After all,every thing is in accordance to the perspective.
Yes! Every new discovery in the field of science comes with bashing and sweeping of some concepts, which are so called fundamentals at that period of time. Feeling sorry or guilty for that action will not give us any advantage over the discoveries. Think That how Newton would look, if he travelled across the time and found that his calculus was praised by mathematicians and physicist till now and his ‘Corpuscles Theory’ regarding the concept of light is thrown in the trash by everyone. Laws of nature is not an invented one! it is just discovered. It’s always there for whole time and we just found that in the past centuries. And When giving up most of the concepts that we believed as ‘fundamental’ , We can just say that we have misunderstood for many years and goes on. So, these all actions clearly indicates that the concepts of universe according to our understandings, are evolving , toward the most precise form.The Theory That connects every dots and phenomenons to the fullest as possible
The idea of fundamentality changes over the time. If the concept of fundamentality doesn’t sits in mind firmly,but as a just one of the information which can be changed easily , I think we would try to question almost everything on the universe and would try to emerge theories often as Einstien, Feynman,Heisenberg,Schrodinger bashed the gates of some fundamentals in the previous centuries
In my understanding, in the context of string theory, it is not fundamental. Even, in larger scale , the space is expanding in the accelerating manner. And the existence of gravity of large heavenly objects like black hole, gives some serious effects on the space-time continuum. And what if it also affects the properties that Makes us to say that space is so called fundamental , according to our frame.
Yes,everything is changed. Change is the only constant in this universe. If evolution of biological organisms is a natural progession, then the evloution and changes in the fundamentals is also a natural progession. Our aim is to find which is actually fundamental and to understand the universe as ellaborate as possible. Even fundamental thinking can be a obstacle to our journey of the research.