Albert Einstein quiz

More questions about Albert Einstein

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1. 1 Easy

   What constant is $c$ in Einstein's formulas?

   Answer: Speed of light

   Why: Einstein wrote the speed of light as V in his 1905 papers and only switched to c in 1907, when c was already the standard symbol.

2. 2 Medium

   How did Albert Einstein investigate physics as a sixteen-year-old?

   Answer: Writing a scientific essay

   Why: At sixteen Einstein sent his uncle Caesar Koch his first essay, on the ether in a magnetic field, and called it still naive and imperfect.

3. 3 Hard

   Which home appliance did Albert Einstein and Leo Szilard patent?

   Answer: Absorption refrigerator

   Why: Patent 1,781,541, granted in 1930 and sold to Electrolux: no moving parts, no electricity, just heat cycling ammonia, butane and water.

4. 4 Easy

   What did Albert Einstein call spooky action at a distance?

   Answer: Quantum entanglement

   Why: Einstein rejected the idea because instantaneous particle interaction seemed to violate the cosmic speed limit of light.

5. 5 Medium

   In what country was Albert Einstein born?

   Answer: Germany

   Why: Einstein was born in Ulm on 14 March 1879; at 16 he gave up his German citizenship and became Swiss in 1901.

6. 6 Hard

   What was the maiden name of Albert Einstein's second wife Elsa?

   Answer: Einstein

   Why: Elsa was Albert's cousin twice over: their mothers were sisters and their fathers were first cousins, so she was born an Einstein.