Electrons surfing on a laser beam / fotonit valon aalloilla
Electrons surfing on a laser beam
"The fundamental idea is to enable scientists to use laser beams to accelerate electrons. What sounds deceptively simple in theory raises a whole series of challenges in practice, extending across various fields of physics. For example, the scientists need to be able to control the oscillation of light and the movement of electrons with great precision in order to ensure that they meet at just the right moment."
"However, the acceleration distance of only 0.01 millimetres currently available to the research team in Erlangen is not sufficient for them to generate the energy needed for practical applications. "Despite this, for particle accelerators in medicine, we would only need a tiny acceleration length of less than a millimetre," explains Dr Martin Kozák, who carried out the laboratory experiment."
Kiihtyy aika nopeasti
Laajeneva avaruus on keisari alasti
" kaksiulotteista kappaletta ei ole olemassa, kolme riittää kaikkeen joten minne se neljäs laitetaan."