Physics keeps life going-物理 依据 生命

Τρίτη, 31 Ιουλίου 2012

Σάββατο, 28 Ιουλίου 2012

Τετάρτη, 25 Ιουλίου 2012


ACCELERATING EDUCATION: POYNTING THEORY: This theory proves that the moving electrons through the wires getting their energy to generate heat because of the energy flowing into the ...

ACCELERATING EDUCATION: Feynman and general relativity! and uncertainty pr...

ACCELERATING EDUCATION: Feynman and general relativity! and uncertainty pr...: According to Newton, the gravitational effect is instantaneous, that is, if were to move a mass, we would at once feel a new force because o...


physics olimpiad

Olympiad of physics  :  Estonia has the honour of being the host of the 43rd International Physics Olympiad (IPhO),  . Great success for Greek Team

EMMANOUIL VOURLIOTIS, Greece    Bronze medalist

FOTIOS VOGIAS, Greece                 
MICHALIS HALKIOPOULOS, Greece         Honorable Mentioned

Οι Έλληνες μαθητές (από αριστερά) Σταύρος Ευθυμίου, Φώτιος Βόγιας, Εμμανουήλ Σακαρίδης, Εμμανουήλ Βουρλιώτης και Μιχαήλ Χαλκιόπουλος, μαζί με τον Εσθονό οδηγό τους
(Φώτιος ΒόγιαςΜιχαήλ ΧαλκιόπουλοςΕμμανουήλ ΒουρλιώτηςΕμμανουήλ Σακαρίδηςκαι Σταύρος Ευθυμίου)

Theoritical Problems

Experimental problems

Κυριακή, 22 Ιουλίου 2012


Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.

Today, the Sun crosses the celestial equator heading north at 11:44 UT. Known as an equinox, this astronomical event marks the first day of spring in the northern hemisphere and autumn in the south. It also marks the beginning of Norouz, the Persian (Iranian) new year. Equinox means equal night. With the Sun on the celestial equator, Earth dwellers will experience nearly 12 hours of daylight and 12 hours of darkness. Of course, in the north the days will grow longer, the Sun marching higher in the sky as summer approaches. To celebrate the equinox, consider this scenic view of the setting Sun from the island of Naxos in the Aegean Sea. Recorded last June, the well-planned image captures the Portara (big door) in a dramatic silhouette. Measuring about 6 by 3.5 meters, the Portara is the large entrance to the Greek island's ancient, unfinished Temple of Apollo.

Τρίτη, 10 Ιουλίου 2012


ACCELERATING EDUCATION: ASTROBIOLOGY: Γιγάντια λίμνη μεθανίου Στον Ισημερινό του Τιτάνα, του μεγαλύτερου δορυφόρου του Κρόνου, το διαστημικό σκάφος Cassini.  Fobos...

Feynman and general relativity! and uncertainty principle !!

According to Newton, the gravitational effect is instantaneous, that is, if were to move a mass, we would at once feel a new force because of the new position of that mass; by such means we we send signals at infintite speed. Einstein advansed arguments wich suggest that we cannot send signal faster than the speed of light. By correcting the law of gravity to take the delay into account, we have a new law, called Einstein's law of gravity.....

For consistensy in our physical theories we have to see if Einstein's law of gravity can be further modified to be consistenty with the uncertainty principle. This last modification has not yet been completed. ( Feynman Lectures I, 7-11)

It might seem all right  to consider gravity to be pseudoforce.....Suppose that we all lived in two dimensions and knew nothing of third. Suppose that we shoot an object along the ground, with no forges on it. Where will it go?..... ( Feynman Lectures I, 12-11)

Σάββατο, 7 Ιουλίου 2012

Films about science

In the classroom a scene or clip from popular film or documentary about science can be used to stimulate discussion and raise interest in scientific subjects. We organized such meetings and we find that they were very interesting.

New Asteroid Threat to Earth - Impact Potentia

We also tried a meeting with experiments with a great succes!!

Παρασκευή, 6 Ιουλίου 2012

misconseptions about astrophysics

Galaxy and misconseptions



Professor Higgs is Emeritus Professor of Physics at the University of Edinburgh. He has been named as the recipient of the Edinburgh Award 2011.

His theory of the Higgs boson particle, a tiny yet crucial building block of physical matter, has dominated the world of particle physics for 40 years.

It was while working at the University in the 1960s that he began to formulate the theory.

In this interview, Professor Higgs talks of the honour he feels at receiving the Edinburgh Award 2011 and explains what it will mean to him if scientists at CERN confirm the existence of the Higgs boson.