Dr. Shlomo Barak,Department of Physics, Tel Aviv University

Date: 
Tue, 10/06/201414:00-15:30
Location: 
Danciger B building, Seminar room
"On photons and the vacuum state":
Light is just the presence of Photons. Classical waves provide only an approximate representation of light. Recent experimental work (end of 2011) dispels the need for attributing a dualistic nature to light and makes the Bohr`s Complementarity Principle irrelevant.
The length of a Photon is nλ, n being the number of cycles, and perpendicular to the direction of propagation its cross-section area is 1/4π ∙ λ2. In the absence of Photons, space contains only the ground state (vacuum state) quantized vibrations which we interpret as actually the Dirac`s Sea. The meanings of the Planck`s Constant ℏ and the Fine Structure Constant α are revealed.