Jump to content

SciTechPress

Since light has constant speed, when you turn a light bulb on, how does the photon generated reach the speed of light without acceleration?

Topic Summary

Created

Last Reply

Replies

Views

SciTechPress -
SciTechPress -
1
328

Top Posters


Recommended Posts


Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Content

    • By SciTechPress
      ... Yes.. I know... both...
      BUT ... have we made any progress in our understanding beyond that?

       
    • Guest
      By Guest
      Let me attempt to blow your mind: “Now” travels at the speed of light.
      When the light turns green, I don't concern myself with the fact that the light actually turned green a nanosecond earlier than I saw it. As far as the distances we're used to, “now” might just as well be universal.
      On interstellar distances, you might expect that the lag start mattering. Except it really doesn't. Maybe Sirius isn't there anymore. Maybe it went supernova five years ago, and the shockwave is riding towards us as you read, and it will hit us in another three years. There's no way we'd know. We look up and see the old faithful Sirius sitting right where it's always been. And we can measure its gravitational influence on us and neighboring stars. There is no knowing it's actually gone, and that's because it actually isn't. To someone in the neighborhood of Sirius, the star is no more, but, to us, it still exist. “Existence” travels at the speed of light.
      If the sun was spirited away by a species of prankster kardashev 3 aliens, it would keep “being there” for 8 minutes as far as we'd be concerned.

      And those 10 billion light years away stars we see through our telescopes, they are there. Because we can see them.
      - Julien Boyer
    • By Bible Speaks
      Origin of the Universe:
      Gen. 1:1: “In the beginning God created the heavens and the earth.”                                
      Astronomer Robert Jastrow wrote: “Now we see how the astronomical evidence leads to a biblical view of the origin of the world. The details differ, but the essential elements in the astronomical and biblical accounts of Genesis are the same: the chain of events leading to man commenced suddenly and sharply at a definite moment in time, in a flash of light and energy.”—God and the Astronomers (New York, 1978), p. 14.                      
      JW.ORG

    • By SciTechPress
      Light always travels at the speed of light. It never increases or decreases its speed. (Technically, this is only true when the light is in vacuum, but the air in a room where the light is turned on is sufficiently close to a vacuum.)

      You're thinking about light as a classical particle, which indeed has to start from rest if it wants to move. Instead, think of light as a vibration of the electromagnetic field.

      There is a simple analogy for this - without any quantum mechanics or relativity, just classical mechanics.

      Consider a string attached to a wall on one side and held by you on the other side. If you vibrate the string on your side, the vibration will propagate to the other side at a fixed speed that depends on the material from which the string is made and on the tension of the string.

      The propagation speed of the vibration of the string does not start from zero, nor does it increase or decrease at any time. It is always constant.

      Similarly, light is a "vibration" of the electromagnetic field. This vibration always propagates at a constant speed c.
      - Barak Shoshany, Graduate Student at Perimeter Institute for Theoretical Physics
      Listen to my commentary on this
    • By SciTechPress
      This is a tough one to answer since in an earlier post we debunked the infinite mass old theory.
      Any ideas?
    • By admin
      "The notion of mass "increasing" with velocity is an outdated one. Under current definitions of "mass", mass doesn't increase at all with velocity; instead, it is an intrinsic property of the object in question, which is the same in all reference frames.
      ... If you're inside your rocket ship traveling at 99.99% of the speed of light relative to Earth, you wouldn't be able to tell you were moving at all without looking out the windows (or at your instruments, etc.) Specifically, you would not somehow have more trouble moving because of your increased inertia, and you would not see time slow down for yourself. It's only observers on Earth who would see your time slow down and your inertia increase."
      The magnitudes of most of the famous effects of special relativity (time dilation, length contraction, increase in inertia) are determined by the "gamma factor",

      γ=11−v2/c2√γ=11−v2/c2.

      This is where Allan Steinhardt's answer comes from. It's the factor by which inertia increases, and it's the factor by which we used to say your mass increased, before "mass" was redefined. (Again, this is all according to an observer who sees you moving at 99.99% of the speed of light relative to them; according to you, everything about you is "normal".)" Source
       
  • Forum Statistics

    61,672
    Total Topics
    114,431
    Total Posts
  • Member Statistics

    16,504
    Total Members
    1,592
    Most Online
    Leander H. McNelly
    Newest Member
    Leander H. McNelly
    Joined




  • Topics

  • Posts

    • That was the best you could think of to respond?  LOL.....   I get it.. All the major corporations have just lined up to get involved too:  
    • ... and even more interesting is the Society will hold to the 607 date in the face of irrefutable evidence to the contrary. THAT's what makes it interesting !! The rough equivalent of saying the Japanese Empire bombed Pearl Harbor on December 7, 1930, or Obama saying "If you like your health plan, you can keep your health plan."
    • From what I have seen in movies, many black people are smarter than many white people. Back when I was about ten or eleven years old, they used to have a TV show on at Saturday midnight, called "Shock Theatre". They used to show "Frankenstein", "Bride of Frankenstein" the "Werewolf", "The Mummy", and lots of haunted house movies, and stories of Edgar Allen Poe..  I noticed that groups of white people for some reason would go to a haunted house for some reason, and it would be some seriously creepy castle surrounded by thick fog, with wolves howling in the background, with cobwebs, bats, and in the entrance foyer would be a column of ice cold air. and the furniture would skittish across the room, and fall over all by itself, and a moaning voice from somewhere around the ceiling would say " GEEEEEEET OUTTTTTTTT !. Then, blood would start pouring down the large circular staircase, and some stupid white guy would say "Hey!, lookit the blood coming down the stairs .... let's go upstairs and INVESTIGATE!!" ...turns out , this was a very bad idea for everybody involved. Meanwhile, a black person would have been three miles away, running as fast as he can!  
    • Do not put words in my mouth. You know ...... societies changes all the time and their values also. Soo wrong attitudes should be corrected so people can use their lives to worship God.  A person who is preaching and living a clean life will not try to shy away from dedicating himself to God. 
    • Probably the most superficial posting here on this forum because there is no concept of historical context.   Always placing old articles and using modern laws and attitudes to  defame Jws In South Africa the JW brothers had to constantly ask permission from the government for assemblies to allow different colours of people to mingle...... and this was in the 70s and 80s....  When a white person wanted to preach in a black suburb  he would face personal danger and visa versa -  when a black person wanted to preach in a white area he would be thrown out and the npolice called.  It was society attitudes (and in case of SA - enforced by laws) which dictated what values one could hold.   I grew up in the 50s in Africa.  From young  age I saw black women with breasts uncovered in the streets.... I saw a murder of a black man killing another before I was ten.   I knew about Muti- murders (witch-doctor medicine from body parts)  and I thought it was depraved...even as a child.  .  How depraved must voodoo, witch doctors etc not bave seemed to those people living  in 1902 when colonists went to Africa.  British soldiers who underestimated the black "  impi" were slaughtered in war.  Read up about it on Google -  isandlwana.  The movie "zulu"  was the stand of a small group of engineers against a portion of this army. In 1902 JWs definitely held the wrong view of Canaans/Ham's offspring but this was corrected afterwards.  Today,  JWs in the entire world are one United nation while many other religions remain separate.  I saw many churches in USA 5 years ago where only black people attended, and many where only whites attend.  Most  white churches still believe that these are the offspring of Ham because they have not been taught the truth about the bible.  We have matured and hold Jehovahs views on race. I joined a forum  recently as a JW.  The group wanted my views as a JW.  I was shocked to learn how racially divided USA is now and how many people hate whites just for their skin color and perceived past inustices.  Black Israelites took over the conversation and i wish to add - this is a growing trend in USA. USA has a lot of problems to deal with because they have not corrected the historical problems.  JWs have corrected historical errors. If you want to know more about the superstitions in Africa- even amongst the educated..... I can inform you.  Latin America also have many superstitions which Catholicism has not removed.   These practices are not tolerated by JWs when members revert back to old spiritistic practices.   These JWs are corrected and unrepentent ones removed.  There was  a special booklet,  against all forms of spiritism, written which I used extensively in Africa...... and it is also used in the Caribean and south America.   The muslims are also very superstitious about the evil eye etc.  This is realities....in the world .... not fallacies.  JWs now preach to anyone who has an ear to listen in over 1000 printed languages.  The bible is not bias but in 1902 ..... the JWs were..........which proves this point: if one allows jehovah to correct you and you follow the bible's guidance - you will get it right in the end .......and after all.... it is not the beginning that counts but the end of the race.
    • The greatest gift Versions: #1#2#3#4 I'd like to offer you a gift Something sweet Something rare Not an ordinary gift Not one of those that you lost Or never opened Or that you have left in the train Or never accepted But one of those that you open and cry That you are happy about and you don't pretend to be On this day of mid-September I will dedicate to you My greatest gift   I'll like to give your smile away to the moon So that whoever looks at it at night, can think of you So it would remember to you that my love is important And that it doesn't matter what people say Because you have protected me with your jealousy And even though very tired you smile never disapperead I have to go but in my heart I know Your presence is always an arrival And never a departure My greatest gift My greatest gift   I would like you to offer me a gift An untold dream Give it to me right now One of those that I don't know how to open In front of other people Because my greatest gift It's only ours forever.   I'll like to give your smile away to the moon So whoever looks at it at night, can think of you So it would remember to you that my love is important And that it doesn't matter what people say Because you have protected me with your jealousy And even though very tired you smile never disapperead I have to go but in my heart I know Your presence is always an arrival And never...   And if the end had to come now Let it be in a ravine Not in order to hate me But only because I want to fly And if this agony denies everything to you If it denies to you the life itself, breathe mine And I was being very careful not to fall in love before I met you And I was confusing my life with the others' I don't want to harm myself anymore now Love, love   I'll like to give your smile away to the moon So whoever looks at it at night, can think of you So it would remember to you that my love is important And that it doesn't matter what people say And then Given love, taken love, never rendered love A love as great as the time that never surrendered A love that speaks to me with your eyes I have in front of me You are, you are. you are My greatest gift https://lyricstranslate.com
    • If Jack was not in such an all-fired hurry to prove racial prejudice, he would note that the above comment does exactly the opposite and is remarkable for its time (1952). The “worldly wise and powerful and noble” may look down on them (anyone care to argue that they didn’t at that time?) but God certainly does not, nor his organized servants. Blacks are paid the highest compliment for displaying godly traits that can be paid—of being “meek and teachable and form them comes a high percentage of theocratic increase.” Even NOW overt racism is perceived by many blacks. It was 50 times worse a century ago. So, yes, the idea of not waving before a red flag before a racist world is not such a horrible idea. Given prejudice back then, the WT probably saved a lot of black lives by doing as they did. Jack is just doing his usual Jack—trying to stir up hate when no basis for it exists.
  • Popular Now

  • Recently Browsing

    No registered users viewing this page.

  • Who's Online (See full list)

×
×
  • Create New...

Important Information

Terms of Service Confirmation Terms of Use Privacy Policy Guidelines We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.