/u/mehum's posts in /r/askscience

Year:

Only show posts with narrations

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

713 upvotes

Mark as read: Add to a list

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

302 upvotes

Mark as read: Add to a list

Do mice and birds have different colour vision?

13 upvotes

Mark as read: Add to a list

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

2 upvotes

Mark as read: Add to a list

Can an expandable sealed container freely expand in a vacuum?

2 upvotes

Mark as read: Add to a list

How efficient are LEDs in absolute tems?

1 upvotes

Mark as read: Add to a list

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

Mark as read: Add to a list

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

1 upvotes

Mark as read: Add to a list

Colour vision in mice and birds

1 upvotes

Mark as read: Add to a list

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

1 upvotes

Mark as read: Add to a list

Title	Upvotes	Mark as read	Favorited	Rating	Add to a list
Many animals have larger brains than humans. Why aren’t they smarter than us?	713
Why is visible light limited to such a small fraction of the electromagnetic spectrum?	302
Do mice and birds have different colour vision?	13
Does all absorbed visible light effectively "fluoresce" to IR?	2
Can an expandable sealed container freely expand in a vacuum?	2
How efficient are LEDs in absolute tems?	1
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
Why do we cough and sneeze when we have a cold or flu virus?	1
Colour vision in mice and birds	1
Why does a more contagious strain of covid displace other strains of covid, but not the flu?	1