A Brief History of Cosmology and Galaxy Formation (part one)
Pre-History It always comes as a surprise to me to realise how recent our understanding of galaxies, cosmology and galaxy formation...
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THE basal principle, which was the pivot of all our previous considerations, was the special principle of relativity, i.e. the principl... -
THE non-mathematician is seized by a mysterious shuddering when he hears of “four-dimensional” things, by a feeling not unlike that awa... -
UP to now our considerations have been referred to a particular body of reference, which we have styled a “railway embankment.” We supp... -
NOW in practice we can move clocks and measuring rods only with velocities that are small compared with the velocity of light; hence we... -
ON the basis of the physical interpretation of distance which has been indicated, we are also in a position to establish the distan... -
The important thing is not to stop questioning. Curiosity has its own reason for existing. One cannot help but be in awe when he [or s... -
Geometry sets out from certain conceptions such as “plane,” “point,” and “straight line,” with which we are able to associate more or l... -
LIGHTNING has struck the rails on our railway embankment at two places A and B far distant from each other. I make the additional asser... -
IN order to attain the greatest possible clearness, let us return to our example of the railway carriage supposed to be travelling unif... -
"THE purpose of mechanics is to describe how bodies change their position in space with time.” I should load my conscience with g...
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In 1968, Joseph Silk showed that, during the pre-recombination epochs, sound waves in the radiation-dominated plasma were damped by rep... -
Even More Fundamental 1-atoms are far from being the ultimate fundamental particle from which everything in the universe is composed. Eac... -
Quantum particles behave in mysterious ways. They are governed by laws of physics designed to reflect what is happening at smaller scales ...