Max Planck vs William James Sidis

Who Was the Greater Genius? A Complete Comparison

Max Planck
IQ190
Born1858
Died1947
OriginKiel, Duchy of Holstein
Known ForOn the Second Principles of Mechanical Heat Theory (1879)
VS
William James Sidis
IQ250
Born1898
Died1944
OriginManhattan, New York City, U.S.
Known ForThe Animate And The Inanimate

About Max Planck

A German theoretical physicist whose discovery of energy quanta won him the Nobel Prize in Physics in 1918.

Read full biography of Max Planck → · In-Depth Article →

About William James Sidis

American child prodigy

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The Verdict

Based on estimated IQ scores, William James Sidis (IQ 250) ranks higher than Max Planck (IQ 190). However, both made extraordinary contributions.

Frequently Asked Questions

Who had a higher IQ — Max Planck or William James Sidis?

Max Planck had an estimated IQ of 190 while William James Sidis had an estimated IQ of 250.

What is each genius known for?

Max Planck is known for: On the Second Principles of Mechanical Heat Theory (1879). William James Sidis is known for: The Animate And The Inanimate.

Are both considered geniuses?

Yes. Both Max Planck and William James Sidis are universally regarded as among history's greatest intellects.

Full Profile: Max PlanckFull Profile: William James Sidis

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