Posted on 06/22/2017 9:45:54 PM PDT by Vendome
So, here is the dumb question my brother posed:
If a ship leaves earth and transmits "LIVE" video as it travels deep into space, would the transmissions continue to be live and real time even as it traveled months and years away from earth?
At what point does that transmission actually delay or become part of the past?
Bonus question: Assuming the craft continues travel directly away from earth, if it stopped transmitting and then restarted transmitting would that now be real time?
Caveat: I don't know the distance that makes the transmission now a part of the past...
So it’s my brother....
https://www.youtube.com/watch?v=jYfwlzWOYCE
Now i'm pissed off that I wasted a few minutes watching that stupid video.
No, you can't move air very well when there is virtually no air to move. Calling this "thrust" is deliberately misleading. It is something an ignorant and stupid person would say.
If you are old enough to remember the Apollo moon landings you’ll recall the uncomfortable couple second delay in chatting back and forth.
I am told that due to the out-of-synch orbits a “live” transmission from Mars will take 45 minutes to several hours to reach us, depending on where we are in those orbits at the time.
No. Because the video recording is being taken relative to the crew and being sent. The transmission itself is not relative to the ship. You would see a normal video.
If you were OBSERVING the ship itself it would be doppler shifted. But you’re watching a video from inside the vehicle travelling at light speed.
But you are telling me the frame rate information contained in the carrier would somehow not be Doppler shifted along with the carrier?
I do radio engineering for a living. What do you do?
However, in an airless vacuum, would the gunpowder ignite?
IDTS, so even if there was mechanical movement on the firing pin, you would have no ignition and the bullet would not move...?
I think even if, as another poster said, the gunpowder was “oxygenated” or there was “oxygenated fuel” because there is no air, there is no ignition, combustion and therefore no thrust in a true vacuum.
As this all relates to space travel, let’s not forget NASA has said they can “no longer go back to the moon”, they no longer have the technology to do so....
very weird.
Exactly. There is no air to move in a vacuum.
Would you explain how oxidized fuel works in a boundless, airless vacuum?
How would the fuel ignite in such an environment?
“I personally think our galaxy and universe is full of life. Only physics is the reason we do not have contact today. “
Mmm...God restricted us with physics to keep us from seeing the glory of his wonder until his appointed time.
Oh ya, radio engineering at relativistic speeds?
That’s what you do for a living?
You do understand the actual CARRIER is NOT RELATIVE TO THE SHIP. NO DOPPLER SHIFT.
Oh ya, radio engineering at relativistic speeds?
That’s what you do for a living?
You do understand the actual CARRIER is NOT RELATIVE TO THE SHIP. NO DOPPLER SHIFT.
LOL
But really, please explain your “oxidized fuel” statement and how that actually works in an airless boundless vacuum...
Oh and no referencing muslim-loving, Paris Agreement loving NASA, who now state that they have “lost the technology that got them to the moon”.
Thanks.
Really now. Please just stop and educate yourself to become a less stupid person.
LOL. Didn’t think you could answer it.
Just remember, the less we trust our own God-gifted ability to ascertain truth, the more Lefty-Muslim-loving Climate-Change Elites like NASA and the UN are laughing at us.
And you.
Suddenly displacing one of two gravitoelectrically interacting particles would, after a delay corresponding to lightspeed, cause the other to feel the displaced particle's absence: accelerations due to the change in quadrupole moment of star systems, like the Hulse–Taylor binary have removed much energy (almost 2% of the energy of our own Sun's output) as gravitational waves, which would theoretically travel at the speed of light.
I thought Einstein’s conclusion was that if the sun’s mass suddenly vanished, the earth would fly off tangentially like a ball being twirled on a string if the string broke. There would be no lag, as if the gravitational “wave” had to travel the 93 million miles.
1. Bullets are sealed, and can fire underwater. Ambient air has no effect on the ignition of the gunpowder from the primer. Air would be trapped inside the casing when it was loaded.
2. Gunpowder contains it's own oxidizer - Potassium Nitrate - KNO3, and thus does not need oxygen from the atmosphere to fire.
Since you enjoy learning science from youtube videos, here are a few that may interest you:
See Through Model Rocket Engine
Note that in the second video, you can see the thrust created by the engine exhaust (reaction mass) as it pushes the engine casing in the opposite direction (Newton's 3rd law).
In space, no one can hear you stream.
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