Did You Know?

[twentysix by twentyfive]

Some people with exceptionally good eyesight in excellent seeing conditions (at high altitudes in a dessert), who either know where to look or have had an astronomer to guide them have seen Bode's Galaxy in Ursa Major, M81, at 12M light years away.

Did Bode ever see it at all?

 

[Archie_tect]

I can see where this is going....

 

[tyred]

Can you determine its not!
The human eye is also capable of making out the light from a match being struck at over 2 miles, when no other artificial lighting is available.

If that is the case, how come some drivers seem incapable of seeing my much brighter headlamp from point blank range?

 

[classic33]

I can see where this is going....

Lets us know. But its does'nt Bode well.

 

[fossyant]

Under the right conditions, the human eye can see the light of a candle at a distance of 14 miles!

Suddenly makes the quotes from rear LED bike light manufacturers a bit lame:-

'super bright LED light can be seen from 1 mile away' or...
'super candle power, can be seen from 14 miles away, just don't ride too fast or it may blow out"

 

[asterix]

Some people with exceptionally good eyesight in excellent seeing conditions (at high altitudes in a dessert), who either know where to look or have had an astronomer to guide them have seen Bode's Galaxy in Ursa Major, M81, at 12M light years away.

Black forest gateau, for example?