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That which is not measurable is not science. That which is not physics is stamp collecting.
Ernest Rutherford
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Interpretation

What this quote means

Science focuses on what can be quantified and studied rigorously, while non-empirical pursuits lack scientific merit.

Ernest Rutherford's quote emphasizes the importance of measurement and empirical evidence in the field of science. He argues that true scientific inquiry is grounded in the ability to measure and quantify phenomena, contrasting it with mere collection of data or observations, which he dismisses as akin to 'stamp collecting', a term that implies a lack of scientific depth or understanding.

Themes

ScienceMeasurementPhysicsEmpiricalEvidence

In practice

Example use cases

During a science fair, one could refer to this quote to explain the importance of measurable results in experiments.

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The energy produced by the breaking down of the atom is a very poor kind of thing. Anyone who expects a source of power from the transformation of these atoms is talking moonshine.
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