>> I can only presume this must be due to light pollution.
> 
> You need to go out someplace like 50 miles from the nearest street 
> light. It's really rather overwhelming.

I don't know if any such place exists in the UK. Unless maybe you sail 
50 miles out to sea...

>> Well, photons are quantum, right?
> 
> I'm not sure you'd see a point source. You need enough surface that the 
> likelihood of multiple photons reaching your eye in a short interval is 
> positive.

I doubt your eyes can see single photons anyway...

>> (Interestingly, I'm told it *is* possible to make a light source that 
>> emits individual photons, one at a time, on que. And that when you do 
>> this, things like the double-slit experiment still show multiple waves 
>> interferring and reinforcing - despite this being obviously 
>> impossible... Wave-particle duality is weird!)
> 
> It's only impossible if you think the interference is caused by waves, 
> which it isn't.

Well, the books seem to claim that it *is* caused by waves, but they 
babble some nonesense about a "quantum superposition of states" to make 
up for the fact that this explanation makes no sense at all.

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