back to article One thought equivalent to less than a single proton in mass

A headline in the venerable New Scientist magazine "Protons are lighter than thought" has prompted El Reg's Standards Bureau to consider the notion of thought as a small unit of mass. It was believed that the proton was about 0.877 femtometres, less than a trillionth of a millimetre. But now scientists have found the subatomic …

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  1. Milton

    What about decay?

    A Guardian article about Ligo possibly being used to uncover evidence for string theory's extra dimensions had me wondering, this morning, about testability, and I realised that we *still* haven't observed proton decay - which would be really big deal in confirming some facts about a universe which, I am constrained to point out, has, despite immense scientific effort, not been getting any *less* weird since Einstein muttered about "spooky action at a distance". Personally I still have to deploy the mental "long spoon" when supping with dark matter ...

    But, to topic, do thoughts have mass? Insofar as they embody electric charge, then they must do, just as a capacitor must become infinitesimally massier when charged. Does this mean that thinking new thoughts increases one's brain mass? Or, since our mass can, in any given reference frame, change only via our receiving or transmitting something, do mass-increasing thoughts work only when stimulated upon receipt of information from outside ourselves? Does a certain kind of thinking - e.g. complex analysis, creativity, learning - have more mass than other, less challenging 'thought' processes, like watching 'Love Island' or listening to politicians tell lies?

    Is it possible that I am getting heavier when reading an electronics textbook, because I am processing and (I hope) storing complex new information? Whereas perhaps the audience at a Donald Trump speech gradually gets lighter, as the listeners know less and less?

    "Wow, Doc, this is heavy ..."

  2. Ben Liddicott

    Thoughts weigh millions of times more than protons.

    The brain uses about 0.15 calories per minute. By relativistic mass-energy equivalence, the mass of 0.15 calories is 6.98e-15 grams. The mass of a proton is 1.67e-24 grams.

    That means the brain uses approximately 4 billion protons worth of energy every minute. If a thinking brain uses 10% more energy, and you have ten thoughts per minute, a thought weighs in at 40 million protons.

    So yes, protons are quite a bit lighter than thought, I would say.

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