Καλώς ήλθατε στο ταξίδι του φωτός στο χώρο και στο χρόνο. H ιστοσελίδα αυτή έχει κατασκευαστεί για εκπαιδευτικούς σκοπούς κι έχει αντικείμενο το φως ως οντότητα της φύσης.

The Motion Mountain Physics Text is a free and entertaining physics textbook

• with more than 1300 pages
• for undergraduates and anybody interested in physics.

A collection of Albert Einstein’s writings:

• Albert Einstein’s Words on Spirituality and Religion
• Why Socialism?
• What Is The Theory Of Relativity
• Quotes

Renowned physicist and mathematician Freeman Dyson is famous for his work in quantum mechanics, nuclear weapons policy and bold visions for the future of humanity.

In the 1940s, he was responsible for demonstrating the equivalence of the two formulations of quantum electrodynamics Richard Feynman’s diagrammatic path integral formulation and the variational methods developed by Julian Schwinger and Sin-Itiro Tomonoga showing the mathematical consistency of QED.

Το βιβλίο “Σύγχρονη Φυσική” χωρίζεται στις εξής θεματικές ενότητες:

• Διανυσματική Ανάλυση
• Μηχανική
• Ταλαντώσεις
• Συστήματα συντεταγμένων
• Ομάδες κλασσικής μηχανικής
• Αναλυτική μηχανική
• Ειδική θεωρία της σχετικότητας

As part of the growing sustainable and renewable energy movement, the design, manufacture and use of photovoltaic devices is increasing in pace and frequency. The Handbook of Photovoltaics will be a benchmark publication for those involved in the design, manufacture and use of these devices.

This computer-generated image of the Milky Way shows the entire galaxy in one perspective of a 3-D model compiled specially for National Geographic.

The excitement of the Apollo program was that it accomplished a bold leap from the surface of the Earth to the Moon. The deed challenged our technology and engineering skill. Deliberate preparations are being made now for another and even more daring leap.

Don Wilhelms was a member of the Apollo Scientific Team and the US Geological Survey. In this book he describes his role, along with his geologist colleagues, during the Apollo explorations of the Moon. In addition, he presents a brief history of the theories associated with the origin of the moon and its craters, the people and problems involved in the section of the Apollo landing sites, a discussion of the geological results obtained from each of the Apollo landing sites, and finally a summary of the findings from the Apollo missions and the development of a theory to explain the formation of the moon.

The technical triumph of manned landings on the Moon and the return of samples from the lunar surface has provided scientists with a unique opportunity to advance our understanding of the nature, evolution and origin of the solar system.

Preface

The nine suites of samples recovered by the Apollo and Luna missions have provided so many answers that it is now difficult to recall our state of ignorance before July, 1969. The new knowledge is contained in a massive outpouring of scientific literature, conservatively estimated at 18,000 articles which have appeared in the past decade…