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The Science Book by

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RG

IN CONTEXT

BRANCH

Physics

BEFORE

17th century Newtonian physics provides a description of gravity and motion, which is still adequate for most everyday calculations.

1900 Max Planck first argues that light can be considered to consist of individual packets, or “quanta,” of energy.

AFTER

1917 Einstein uses general relativity to produce a model of the universe. Assuming that the universe is static, he introduces a factor called the cosmological constant to prevent its theoretical collapse.

1971 Time dilation due to general relativity is demonstrated by flying atomic clocks around the world in jet aircraft.

In the year 1905, the German scientific journal ...

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