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Scientific laws, effects and principles

Name a scientific law, effect or principle. Hopdown accepts 285 answers here. Common answers keep your bunny near the surface; rare ones dig deeper.

Most common answers

• Newton's First LawExtremely common
• Newton's Second LawExtremely common
• Newton's Third LawExtremely common
• Law of Universal GravitationCommon
• Law of GravityUncommon
• Maxwell's EquationsUncommon
• Joule's LawUncommon
• Snell's LawUncommon
• Kepler's LawsUncommon
• Hooke's LawUncommon
• Archimedes' PrincipleUncommon
• Kepler's First LawUncommon
• Kepler's Second LawUncommon
• Kepler's Third LawUncommon
• Pascal's LawUncommon

Rare answers

• Many-Worlds InterpretationRare
• Doppler EffectRare
• Meissner EffectRare
• Magnus EffectRare
• Observer EffectRare
• RedshiftRare
• Sagnac EffectRare
• Bose-Einstein CondensateVery rare
• Hubble TensionVery rare
• Hanlon's RazorVery rare
• Chargaff's RulesVery rare
• Allen's RuleVery rare
• Red Queen HypothesisVery rare
• Mariotte's LawVery rare
• Law of ReflectionVery rare

Deep cuts

The answers almost nobody gives.

• Noether's TheoremDeep cut
• Stokes' TheoremDeep cut
• d'Alembert's PrincipleDeep cut
• Equipartition TheoremDeep cut
• Dulong-Petit LawDeep cut
• Nernst EquationDeep cut
• Rutherford ScatteringDeep cut
• Paschen SeriesDeep cut
• VSEPR TheoryDeep cut
• Hückel's RuleDeep cut

Plus 245 more answers you'll have to find yourself.