What is the exact speed of light?
Is There Anything That Can Travel Faster Than Light?
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299,792,458 metres per second (approximately 300,000 km/s (186,000 mi/s) ). It is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1/299792458 second. According to special relativity, c is the maximum speed at which any form of information in the universe can possibly travel. Though this speed is most commonly associated with light, it is in fact the speed at which all massless particles and changes of the associated fields travel in vacuum (including electromagnetic radiation and gravitational waves). Such particles and waves travel at c regardless of the motion of the source or the inertial reference frame of the observer.
https://en.wikipedia.org/wiki/Speed_of_light
The speed of light in vacuum, commonly denoted c, is a universal physical constant important in many areas of physics. Its exact value is 299,792,458 metres per second (approximately 300,000 km/s (186,000 mi/s) ). It is exact because by international agreement a metre is defined as the length of the path travelled by light in vacuum during a time interval of 1/299792458 second. According to special relativity, c is the maximum speed at which any form of information in the universe can possibly travel. Though this speed is most commonly associated with light, it is in fact the speed at which all massless particles and changes of the associated fields travel in vacuum (including electromagnetic radiation and gravitational waves). Such particles and waves travel at c regardless of the motion of the source or the inertial reference frame of the observer.
https://en.wikipedia.org/wiki/Speed_of_light
A better unit for the SOL (speed of light) is furlongs per fortnight.
Wave fronts can travel faster than the SOL but this is an apparent not a real speed.
furlong[ˈfərˌlôNG]NOUN
an eighth of a mile, 220 yards.
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fortnight[ˈfôrtˌnīt]NOUN
BRITISHa period of two weeks.
informalused after the name of a day to indicate that something will take place two weeks after that day.
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https://www.youtube.com/watch?v=nN3OFooVjBA
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Speed of light = 186,282 miles per second
1 mile = 8 furlongs
1 fortnight = 14 days
1 day = 86,400 seconds
186,282 miles per second =
(186,282 x 8 x 86,400 x 14) = 1.8026 x 1012 furlongs per fortnight (rounded)
I agree with Mr. Len Leonid Mizrah and what he brought
From sources.
Scientists today emphasize that gravitational waves do not take time. They move simultaneously from one side of the world to the other, and there is a possibility for the movement associated with the expansion of the universe (it is known that the universe is expanding and that Fast) It is noticed that the orbits, stars and space systems move away from each other and the center of the universe to its edges, at a speed exceeding the speed of light
I have asked few questions in research gate
Whether speed of light may be increased by pushing with mirror
What will be effect of mirror in pendulum motion on speed of light
What is the speed of light exiting at critical angle
What is source of energy when light entering from denser to lighter medium as speed of light is increasing
Isra and Mi'raj are fixed in the text of the Qur'an and the hadiths, although the human mind cannot understand them, but they did happen to the Prophet Muhammad (peace be upon him).
قال تعالى: ( سُبْحَانَ الَّذِي أَسْرَى بِعَبْدِهِ لَيْلاً مِنَ الْمَسْجِدِ الْحَرَامِ إِلَى الْمَسْجِدِ الأَقْصَى الَّذِي بَارَكْنَا حَوْلَهُ لِنُرِيَهُ مِنْ آيَاتِنَا إِنَّهُ هُوَ السَّمِيعُ الْبَصِير ) الاسراء :1 .
The Almighty said: (Subhan, who was captured by his servant at night from the sacred mosque to the most extreme mosque, which blessed us about him).
Where a great and majestic reception was received, so the next one who honored that world by his presence and prayed with the angels of heaven, prayed behind him prophets ^.
Imam al-Baqir (AS) says: When the Messenger of Allah came to heaven, he reached the house and attended the prayer. Gabriel then authorized and stayed. The Messenger of Allah came and described the angels and prophets behind him and prayed for them.
Al-Maraj's goal was not to roam the Prophet Muhammad in the heavens to meet God, as the na السve thought.
The goal was to see the Apostles of the mysteries of divine greatness throughout the world of existence, especially the Alawite world, which constitutes a group of proofs of its greatness, nourished by its gracious spirit and gets a new look and realization of the guidance and leadership of mankind.
This goal is explicitly stated in the first verse of Surat Al-Isra and verse 18 of Surat Al-Najm.
The possibility of Mi'raj scientifically
Here is the question: How did all this long travel and these wonderful and diverse views and long events take place in one night, but in part?
The answer to the question is clear by noting that the book of Miraj was not as simple as usual to be measured by the usual standards! No travel was normal nor its means and riding nor sights and conversations nor the standards contained in it, such as our limited and small standards on the globe, everything was in Miraj extraordinary! It was by standards beyond our time and place.
It is therefore not surprising that all of these things fall on a scale of one night or less than one night of the globe-temporal scales.
The author also explains the optimal interpretation, some scientific suspicions that stand without the possibility of Maraj scientifically, and answered by His Eminence and discussed I have mentioned here to be the benefit of this research envisaged and as the Koran says (and above all knowingly) and these suspicions can be summarized as follows:
First, the first thing that wants to pass the Earth's space ocean to the depth of space is the necessity to escape the force of gravity, and man needs to get rid of gravity to the means of exceptional speed of at least (40) thousand kilometers per hour.
Second, the other obstacle is the absence of outer space, which is the strength of human life.
Third, the third inhibitor is the hot scorching heat (the sun) and the deadly cold, depending on the location of man in space from the sun.
Fourth, there is the danger of fatal space radiation such as cosmic rays, ultraviolet rays and X-rays, as it is known that the body needs a small amount of these radiation, which is such a size does not harm the human body and the presence of the atmosphere layer prevents from leaking heavily to Earth Outside the atmosphere, these radiation are so fatal.
Fifth, there is the problem of weight loss that man is exposed to in outer space. It is possible for man to get used to life gradually in the atmosphere of weightlessness, but the transition once to outer space - as in the mirage - is very difficult, but not possible.
Sixth: The last problem is the problem of time, where science today confirms that there is no way going faster than the speed of light, and who wants to tour the skies of outer space needs a speed that is faster than the speed of light!
In the face of these suspicions are summarized in two points:
First, in our time, and now that space flights have become commonplace in science, five of the above six problems are absent, and only time remains. This problem arises only when talking about very remote space areas.
Second, the Miraj was not an ordinary event, but a miraculous miraculous and then divine power. The same is true of all the miracles of the prophets. This means that the miracle is not impossible.
If man has been able to invest in the data of modern science to provide solutions to the aforementioned problems, such as the problem of gravity, radiation, weightlessness, and so on, so that he can travel to outer space .. Can not God - the Almighty Creator of the universe, with absolute powers - Way beyond the mentioned problems ?!
We are sure that God blessed His Almighty in the reach of His Messenger 'suitable compound in which he preserved all the risks and damages in his course towards the heavens, but what is the name of this compound is \ "shining \" or \ "flap \"? And in what form and form? All these things are ambiguous for us, but they do not contradict our certainty, and if we are to overcome all these things, the problem of speed, which remains - alone - needs to be solved, the latest data of modern science are beginning to overcome this problem yet or find suitable solutions despite Einstein confirms in his theory that the speed of light is the maximum known speed today.
Scientists today emphasize that gravitational waves do not take time. They move simultaneously from one side of the world to the other, and there is a possibility for the movement associated with the expansion of the universe (it is known that the universe is expanding and that the stars and celestial systems move away from each other Fast) It is noticed that the orbits, stars and space systems move away from each other and the center of the universe to its edges, at a speed exceeding the speed of light!
So, in a nutshell, we say: The above problems do not prevent the mind of the occurrence of Mi'raj, and without ratification, and Mi'raj is not considered a mental situation, but it can be overcome the problems raised by using appropriate means and capabilities.
Thus, Maraj is not considered to be neither possible from the point of view of mental evidence, nor from the point of view of the data and scales of contemporary science. In addition, it is extraordinary miraculous. Therefore, if sound transport evidence is based on it, it should be accepted and believed. Shaykh ended his shadow.
We say that the speed and power that man - no matter how much science and technology - can determine, and that in the second part of the miracle, \ "the upper journey \", ie: ascend from where the ground journey ended up in a heavenly journey hacked the Messenger of God 'by All layers of the atmosphere and across the universe to the sky does not and will not be able to determine anything in it, and will not know about anything but what the Koran told him ... The materialists (old and new) measure everything in length, width and depth, with their standards And weighing everything with agreed weights, JAMA or weight, they denied and rejected. Thus the materialists denied the "miracle of Isra and Mi'raj" in total and in detail, because they are not subject to their laws and balances ...
Time travels faster than light. We have Newton's laws of motion. What are the laws of time? We need to quantify.
Dear Diary,
Prof. Len's explanation is spot on. Light has been accepted to be the fastest, globally, as far as we know. On a philosophical note, I would like to add that our thoughts (human thoughts) could be faster than light. I hope there soon could be an equipment to measure this.
Len Leonid Mizrah
Thank you for posting on furlongs and fortnights. We had a lecturer that had all his data in that format (I guess he thought it would help us to convert) as well as distances in (white chalk) blackboard erasers.
I think you need to edit your post a little. You need an exponent in the last line:
1012 or 10^12. Top left of your post allows you to edit it.
I'll assume your math is fine...
Navnit Kumar Ramamoorthy
Our thoughts cannot be faster than the speed of light. Nerve impulses in the brain take a finite time...
Satish Narula
Whether speed of light may be increased by pushing with mirror
No, the speed of light is a fixed constant irrespective of the velocity of the observer
What will be effect of mirror in pendulum motion on speed of light
No effect. See above
What is the speed of light exiting at critical angle
Depends on the medium the light is exiting from. The critical angle is related to the RI of the medium
What is source of energy when light entering from denser to lighter medium as speed of light is increasing
The speed increases but the wavelength changes. Conservation of energy.
Dear Rumani Dey
Madam you kindly stated that (time travels faster than light. We have Newton's laws of motion. What are the laws of time? We need to measure).
Are the biblical miracles (the Old Testament and the New Testament), the Koran coming from the throne of Balqis and other extraordinary things, is time and time involved in the matter.
I know they say without religion research is impossible. But I say without philosophy research is impossible. Regarding my reply it's purely my opinion. Time itself is moving in such a manner we are unable to hold it. We can't hold the past. We might dream of the future but still when we open Our eyes the event has occurred. T1 is independent of T2. Time Is changing every moment. We can't hold it. We can see light, motion but not time,air. My belief is that yet still they must be quantifiable by physics.
Okay
So how do physicists contend that some miracles and divine issues have a role in time and are moving faster than light? Come see Einstein.
Through tolerance towards any opinion or behavior we gain the power wherein thoughts become things or Miracles, telepathy occurs.
Dear Rumani Dey
First of all, I am in these sciences and I do not hide you outside a specialty.
But for the love of God, Madam,
Either you are trying to escape from the answer, and enveloped the element of sympathy with the owners of religion, and Einstein surrendered to them down to sympathy with them.
Or, in your words, you evade the answer that some mechanical miracles have a role, which is evidence of Einstein's general theory of relativity.
I told you what I know. I don't write religion. I write psychology and few equations. I haven't yet reached that level of mind wherein I design rockets. But One of my findings is that Einstein too was a fairy tale writer. I don't like to read works of Einstein. I have my own mistakes. Relativity is a word and don't make me reveal the psychology behind scientific innovation. It contradicts your religious beliefs.
Thank you Madam for your good manners.
I think that in this discussion I am not in the position of defending my religious beliefs, although it is my duty,
But it is to indicate what the mind acknowledges in the statement of truth.
Madam, there is evidence, albeit a quote from our scholars, which makes clear indications that Einstein acknowledged that his general theory of relativity was preceded by Islam by its existence.
Let me tell you something I found. Plants do not have gender. But we know entity that can multiply is feminine. So can we say grass is feminine whereas trees are masculine. From which part of Islam do you think I stole this?
Sorry madam
I have never escaped this charge, but you and I are researchers, and that is why we are here at R G
I apologize that there was a misunderstanding.
- 3x10^8 is the value of speed of light in vacuum(approx.) in m/s.
- The numerical value itself would change depending on the unit system one chooses to use.
- In fact c=1 in light speed units which is the unit generally employed by Relativists. So not much in the numerical value 3x10^8 itself.
- Tachyons are hypothetical particles that travel faster than light. According to Einstein's special theory of relativity – and according to experiment so far – in our 'real' world, particles can never travel faster than light
Rumani Dey
We can change the past (historians do it all the time) but we cannot change the future.
The ‘speed of light’ (commonly denoted by c) generally refers to the speed at which electromagnetic radiation propagates in a vacuum. Although always referred to as the speed of light, this speed should be more properly (if not so poetically) called the ‘speed of a massless particle’ as it is the speed at which all particles of zero mass (not only photons, but gravitons and massless neutrinos if they exist) travel in a vacuum.
The speed of light in a vacuum exactly 299,792,458 metres per second.
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