Recent content by Mohd Abdullah

I think we can determine the existence of an object without using mathematics. An object wouldn't be an object if it doesn't have shape. So, object is that which has shape. An object that is exist is that which has a relative location. For example, the Moon has a location relative to Earth and...

Hey guys, Can the use of mathematics even describe or determines the real world? I mean, mathematical physicists always used and rely on math equations to abstract math "entities" like quantum field, virtual particles, quarks, gluons, etc. Can a physicist used math to determine the existence...

Hey guys, Is it possible to travel with high speed beyond a solar system or a galaxy? Or is there something that will prevent something to move at high speed outside a solar system or a galaxy?

Hey guys, Does black holes exist? Is it even real?

I think, only the observable Universe can be said as finite but unbounded. So, infinite Universe (that's it, if an imaginary object keep moving straight forever it will never return to its starting point) is more likely than the finite yet unbounded Universe. Sometimes, if I want to show that...

So, we can record and take a picture of light in vacuum? I thought light don't actually accelerating because light is supposed to be already there even before we started to record or take a picture of it.

Sorry, what do you mean exactly by self-contained spacetime? Do you mean Universe, including beyond the observable Universe, is indeed finite and limited? I think what people mean by finite but unbounded Universe is the Universe is indeed finite and has a shape of a sphere. This kind of...

Is space devoid of anything (including quantum fields, etc.) equal to absolute nothing?

Hey guys, Regarding the cosmic void between galaxies, is it really empty? If you read articles from pop science sources mostly said "cosmic voids are devoid of matter", "there are full of dark matter", etc. Thoughts?

Thoughts?

Ah, rocket sled. I think this thing hold the record for the fastest accelerating land vehicle if I'm not mistaken. No wheel-driven vehicle including Top Fuel dragsters can match the speed of rocket sleds. Top Fuel dragsters covered quarter mile in mid 4 seconds while rocket sleds can cover a...

I thought what you meant by your previous answer "No", was even fastest camera with 4.4 trillion fps can't capture a still image or record those things that you had mentioned earlier. I was wrong. What things in the universe that no matter how fast or advanced our technology is, we will never...

Is it possible for a much heavier object to move as fast as those things with the same power just like those things that you had mentioned? The record for the fastest elapsed time for the quarter mile straight race/drag race is held by a rocket-powered hydrogen peroxide dragster at mere 3.22...

Thanks. Can you elaborate your answer?

Okay, if you are familiar with Top Fuel dragsters, those dragsters can cover a quarter mile in just around 4 seconds with 10,000 horsepower. Top Fuel dragsters weigh at 2300 pounds. Are there anything with much lighter weight that can also accelerate fast with power equivalent to 10,000...