Trevor Harley wrote:
In June's "Weather" (which I have just got round to reading) there is a
picture of euphoric rays on page 143 and discussion of crepuscular rays
on page 175. What's the difference?

I've never heard of "euphoric rays" before. I've heard of and seen
crepuscular, but when I think about it, I'm not sure how they're
produced. What's illuminated - dust and other atmospheric particles?

Trevor
http://www.personal.dundee.ac.uk/~taharley/

I've never seen the term before but on looking at the picture I
would imagine euphoric rays are those that pass above the observer,
unlike crepuscular rays which are seen below the sun. In either case
it is atmospheric dust that is in the shadow of the cloud and it is
this unilluminated region that we see.
Another explanation is that the euphoric rays consists of
finely powdered crack cocaine.

Tudor Hughes, Warlingham, Surrey.