534 reputation
410
bio website none.seriously
location Switzerland
age 30
visits member for 2 years, 11 months
seen Dec 18 at 10:58

Physicist.


Dec
8
awarded  Critic
Oct
13
awarded  Guru
Jan
4
awarded  Yearling
Dec
24
awarded  Custodian
Dec
24
reviewed Approve Why do plants have green leaves and not red?
May
2
awarded  Good Answer
Jan
4
awarded  Yearling
Sep
18
comment Ultrasound during pregnancy
I sure hope so - I wouldn't go as far as distrusting an actual doctor who claimed this, since it's a Physics detail that shouldn't taint the diagnosis, but still I'd be very careful with someone who claims false facts instead of simply admitting to not knowing for sure...
Sep
13
comment Ultrasound during pregnancy
Radiation?! Ultrasound is sound is a pressure wave, while radiation means actual particles (including, but not limited to, light consisting of photons. I know you didn't write that yourself, but still this requires emphasis - ultrasound is not radiation
Apr
9
awarded  Commentator
Apr
9
comment Why do plants have green leaves and not red?
@David only if the absorbed energy weren't used efficiently, which would, as you suggest, be a reason for leaves to be not black. You could also have green but inefficient and therefore hot leaves, but evolution would have gotten rid of these already
Jan
16
comment Why do plants have green leaves and not red?
good point. Maybe in most cases absorbing green was just the first thing that happened (by evolution) and it was sufficient, but I'm just speculating...
Jan
11
revised Why do plants have green leaves and not red?
fixed the second link (and a typo or two)
Jan
11
comment Why do plants have green leaves and not red?
nice links, though I doubt black plants are likely to happen anywhere since that would most likely need too many different pigments
Jan
11
suggested approved edit on Why do plants have green leaves and not red?
Jan
9
awarded  Editor
Jan
9
revised How does laser surgery correct accommodation problems?
added the tag, removed the comment
Jan
9
revised What's the maximum and minimum temperature a human can survive?
... for our american friends
Jan
9
revised Life without DNA?
[citation needed]
Jan
9
comment How does a veggie-less diet affect the human body?
@ThePlan: well that renders my answer useless...