Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: marzosia2 on 20/03/2016 11:36:28
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GALLILEO 1600 fall law
Newton 1679 Philosophiae naturalis principia mathematica
1861 J. C. Maxwell, published his theory of electromagnetic fields and radiation, which
shows that light has momentum and thus can exert pressure on objects.
1901 P. N. Lebedev EXPERIMENTAL EXAMINATION OF LIGHT PRESSURE
1905 - Einstein - copied to SRT Newton's Law and Gallileo
1915 - Einstein - he copied to GRT Newton's Law and Gallileo's Law ( VERY VERY IMPORTANT IS natural fall law !
the principle of equivalence - Gavitation = Acceleration )
(https://3.bp.blogspot.com/-9m2uRekSDEE/Vuz1pIbxbGI/AAAAAAAACsQ/VYlWVpV3e10MRn0R_8M3Ar0r2FhDE9iIg/s640/del1177.jpg)
WHAT is it INTENSITY SHIFT ?
Distance D = constant !
SUN's power = constant !
L1 , L2 , L3 ???
LIGHT NEED TIME t FOR DISTANCE D ! what during this time is doing the Earth and SUN ?
(https://www.thenakedscientists.com/forum/proxy.php?request=http%3A%2F%2F4.bp.blogspot.com%2F-wtIl_UfVKRo%2FVoMHCa2rWHI%2FAAAAAAAACkc%2FUCGVAeYSZlQ%2Fs1600%2Fsun.jpg&hash=d92744a30734ad9d050dfce6b0b546f1)
ABOVE it is not DOPPLER WHY ?
source >> V ..............D.............SENSOR >> V
V=V distance D is constant
DO WE HAVE ABOVE PROBLEM IN ATOM ?
Do we have in books (physics )
right now any information about above
problem ( inside atom )?
WHY I ASKING ABOUT INTENSITY ?
Galilean relativity ?*********************************************************
Imagine a person inside a ship which is sailing on a perfectly smooth lake at constant speed. This passeneger is in the ship's windowless hull and, despite it being a fine day, is engaged in doing mechanical experiments (such as studying the behavior of pendula and the trajectories of falling bodies). A simple question one can ask of this researcher is whether she can determine that the ship is moving (with respect to the lake shore) without going on deck or looking out a porthole.
Since the ship is moving at constant speed and direction she will not feel the motion of the ship. This is the same situation as when flying on a plane: one cannot tell, without looking out one of the windows, that the plane is moving once it reaches cruising altitutde (at which point the plane is flying at constant speed and direction). Still one might wonder whether the experiments being done in the ship's hull will give some indication of the its motion. Based on his experiments Galileo concluded that this is in fact impossible: all mechanical experiments done inside a ship moving at constant speed in a constant direction would give precisely the same results as similar experiments done on shore.
The conclusion is that one observer in a house by the shore and another in the ship will not be able to determine that the ship is moving by comparing the results of experiments done inside the house and ship. In order to determine motion these observers must look at each other. It is important important to note that this is true only if the ship is sailing at constant speed and direction, should it speed up, slow down or turn the researcher inside can tell that the ship is moving. For example, if the ship turns you can see all things hanging from the roof (such as a lamp) tilting with respect to the floor
Generalizing these observations Galileo postulated his relativity hypothesis:
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any two observers moving at constant speed and direction with respect to one another will obtain the same results for all mechanical experiments
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(it is understood that the apparatuses they use for these experiments move with them).
In pursuing these ideas Galileo used the scientific method (Sec. 1.2.1): he derived consequences of this hypothesis and determined whether they agree with the predictions.
This idea has a very important consequence: velocity is not absolute. This means that velocity can only be measured in reference to some object(s), and that the result of this measurment changes if we decide to measure the velocity with respect to a diferent refernce point(s). Imagine an observer traveling inside a windowless spaceship moving away from the sun at constant velocity. Galileo asserted that there are no mechanical experiments that can be made inside the rocket that will tell the occupants that the rocket is moving . The question ``are we moving'' has no meaning unless we specify a reference frame (``are we moving with respect to that star'' is meaningful). This fact, formulated in the 1600's remains very true today and is one of the cornerstones of Einstein's theories of relativity.
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Marosz's example
HOW BIG FORCE IS PUSHING CAMERA INSIDE
AIRPLANE A and B
(https://2.bp.blogspot.com/-PqEJjEZQisM/UKjVcJCGp9I/AAAAAAAAALs/0XOxA_hceK4/s1600/wwwwwwwwwwwww.JPG)
a) the same ?
b) not the same ?
what it mean for PHYISCS ?
EM radiation is pushing objects it is typical classica mechanic !
(https://4.bp.blogspot.com/-PE9eTE0CEPM/Vbxh34yNqHI/AAAAAAAACbw/zorTzyj0NZ0/s640/SE.jpg)
AM I MOVING ? RESPECT TO WHAT ?
Exist special FRAME or not ?
WHAT ABOUT CLASSIC MECHANICA ?
(https://1.bp.blogspot.com/-DW9a0CMxD24/Vb3U97pbcoI/AAAAAAAACc4/OsuA9cFIVB8/s640/gravi.jpg)
DO WE SEE HERE NEW INFORMATIONS FOR PHYSICS ?
What About Naturall FALL LAW ?
m -->F1....R...PLANET....R...<-F2- m >>>> motion
F1/F2 gravitation force !
how much time need left and right mass m for distance L ?
the same ? not the same ?
how big force is registering left /right mass ?
Where planet started 3D signal ?
Where Mass m is registering 3D signal from PLanet ?
What will be if Absolute motion = ZERO ?
F1=F2 ?
What if exist absolute motion ?
F1>F2 or F1<F2 ?
DO WE SEE HERE NEW INFORMATIONS FOR PHYSICS ?
how big EM preasure is pushing LEFT/ RIGHT WALL ?
the same ? not the same ?
(https://2.bp.blogspot.com/-nCDH5-n3VTU/VT2AQ_J2eBI/AAAAAAAACWA/Zdv6D0ym1BE/s640/11.png)
How to recognize constant motion
I'm inside rocket without Windows
may I turn ON BULB ? what EM preasure will do with ROCKET ?
(https://4.bp.blogspot.com/-NIRPGlmY9Tw/Ualtt_yXisI/AAAAAAAAA7w/IKotONfnhD8/s1600/compass.JPG)
EXIST ANY SPECIAL FRAME WHERE
EM preasure is the same for Each Wall ?
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Do You think that all is OK with physics (books right now ) ?
What you think
exist people who can be more smarter than Gallileo / Newton / Einstein
Did You study very Hard Mach ?