First lesson must have nothing more than an experiment and the pleasure to watch it!!!
you can see how...
http://www.acceleratingeducation.com/p/experiments.html
Τετάρτη 28 Αυγούστου 2013
Κυριακή 25 Αυγούστου 2013
Only physics can explain it: Conservation o f Energy
Many transformations of energy can see someone in the following video.
Students in France enjoy their summer, feeling the amazing alternations of kinetic and potential energy.
As the kid goes through its twists, turns, rolls, and loops, it gains and loses its initial potential energy. Energy changes from potential into kinetic energy and back into potential energy.
How are you enjoy your summer?
Students in France enjoy their summer, feeling the amazing alternations of kinetic and potential energy.
As the kid goes through its twists, turns, rolls, and loops, it gains and loses its initial potential energy. Energy changes from potential into kinetic energy and back into potential energy.
How are you enjoy your summer?
Τρίτη 20 Αυγούστου 2013
Two-photon exchange in ....
two-photon exchange (TPE) in elastic electron scattering off the trinucleon systems, 3He and 3H.
Δευτέρα 19 Αυγούστου 2013
Σάββατο 17 Αυγούστου 2013
ANCIENT ASTRONOMY
..more details
Κυριακή 11 Αυγούστου 2013
Relativistic collisions-interactions and Feynman Diagrams
Tachyons the exchanged objecst appear only during relativistic collisions, never on their own. They are called virtual objects, to distinguish them from the usual, real objects, which we observe everyday.
In the following diagram the first object ( left line) has changed its momentum
before the second one.That would mean that there is a short interval when momentum
and energy are not conserved! The only way to make sense of the situation is to assume that there is an exchange of a third object, drawn with a dotted line (virtual particle).
Tachyon is always a virtual object and its mass is an imaginary number!
On top of that, we also see directly from the graph that the exchanged object
moves faster than light. It is a tachyon, from the Greek ταχύς ‘rapid’. In other words,
collisions involve motion that is faster than light! That collisions are indeed
the only processes where tachyons play a role in nature.
More details you can read at Christoph Schiller's Motion Mountain
In the following diagram the first object ( left line) has changed its momentum
before the second one.That would mean that there is a short interval when momentum
and energy are not conserved! The only way to make sense of the situation is to assume that there is an exchange of a third object, drawn with a dotted line (virtual particle).
Tachyon is always a virtual object and its mass is an imaginary number!
On top of that, we also see directly from the graph that the exchanged object
moves faster than light. It is a tachyon, from the Greek ταχύς ‘rapid’. In other words,
collisions involve motion that is faster than light! That collisions are indeed
the only processes where tachyons play a role in nature.
More details you can read at Christoph Schiller's Motion Mountain
Παρασκευή 9 Αυγούστου 2013
FEYNMAN
Interesting educational Method for Teaching Feynman Diagrams
http://micro-kosmos.uoa.gr/en/en-index.htm
or you can see the video in the youtube
Interesting technological prosedure for teaching Feynman Diagrams is the following program as you can see in the video:
interaction e-e
more detail click here
http://micro-kosmos.uoa.gr/en/en-index.htm
or you can see the video in the youtube
Interesting technological prosedure for teaching Feynman Diagrams is the following program as you can see in the video:
interaction e-e
the interaction of two photons,
known as pair production γ +γ ➝ e- + e+. (One of
those photons is normally part of a strong static field
that interacts with a high energy passing photon.)
the procedure can be seen in the following video:
Δευτέρα 5 Αυγούστου 2013
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