/u/mehum's posts

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Many animals have larger brains than humans. Why aren’t they smarter than us?

713 upvotes • r/askscience

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Why is visible light limited to such a small fraction of the electromagnetic spectrum?

302 upvotes • r/askscience

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What is the earliest historical date we are certain about? I.e. which calendar can we reliably trace back the furthest to a specific recorded event?

45 upvotes • r/AskHistorians

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Do mice and birds have different colour vision?

13 upvotes • r/askscience

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Does all absorbed visible light effectively "fluoresce" to IR?

2 upvotes • r/askscience

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Can an expandable sealed container freely expand in a vacuum?

2 upvotes • r/askscience

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How efficient are LED lamps in practical terms? E.g. for a 10W 1000 lumen lamp, what percentage of the 10W is actually converted into visible light?

1 upvotes • r/askscience

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Why do we cough and sneeze when we have a cold or flu virus?

1 upvotes • r/askscience

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Colour vision in mice and birds

1 upvotes • r/askscience

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Why does a more contagious strain of covid displace other strains of covid, but not the flu?

1 upvotes • r/askscience

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Title	Upvotes	Subreddit	Mark as read	Favorited	Rating	Add to a list
Many animals have larger brains than humans. Why aren’t they smarter than us?	713	askscience
Why is visible light limited to such a small fraction of the electromagnetic spectrum?	302	askscience
What is the earliest historical date we are certain about? I.e. which calendar can we reliably trace back the furthest to a specific recorded event?	45	AskHistorians
Do mice and birds have different colour vision?	13	askscience
Does all absorbed visible light effectively "fluoresce" to IR?	2	askscience
Can an expandable sealed container freely expand in a vacuum?	2	askscience
How efficient are LED lamps in practical terms? E.g. for a 10W 1000 lumen lamp, what percentage of the 10W is actually converted into visible light?	1	askscience
Why do we cough and sneeze when we have a cold or flu virus?	1	askscience
Colour vision in mice and birds	1	askscience
Why does a more contagious strain of covid displace other strains of covid, but not the flu?	1	askscience