1,421 reputation
1620
bio website msquant.sourceforge.net
location Århus, Denmark
age 49
visits member for 4 years
seen Nov 23 at 23:31

(Last updated 2014-08-23.)

I am mostly interested in making scientifically important observations, like timing occultations of or by Solar System bodies and measuring variable stars.

I am also interested in citizen science projects and participate in some of them, like Galaxy Zoo.

I have been an amateur astronomer since 1975 and have worked at the European Space agency's (ESA) technical centre in Holland, ESTEC, on the ARISTOTELES mission, an earth gravity mapping mission.

Approximate coordinates: 55°20 N, 10°20 E


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May
23
comment How intense a magnetic field would it take to keep an hypothetical iron-made moon orbiting around it?
Wouldn't the potential energy in the magnetic system quickly be converted to heat due to hysteresis loses? Or is that only in ferrite materials or similar?
May
20
revised Why do lasers cut? Is this a case of light acting as matter?
Copy edited.
May
20
revised Why do lasers cut? Is this a case of light acting as matter?
Copy edited.
May
20
suggested suggested edit on Why do lasers cut? Is this a case of light acting as matter?
May
20
suggested suggested edit on Why do lasers cut? Is this a case of light acting as matter?
Apr
21
comment Why are sine/cosine always used to describe oscillations?
This is better than dancing hamsters :-)
Apr
12
revised What if photons are not the fastest particles?
Copy edited.
Apr
12
suggested suggested edit on What if photons are not the fastest particles?
Apr
10
revised Kepler's third law doesn't give earth's orbital period! Why?
Copy edited.
Apr
10
suggested suggested edit on Kepler's third law doesn't give earth's orbital period! Why?
Apr
10
revised Kepler's third law doesn't give earth's orbital period! Why?
Copy edited.
Apr
10
suggested suggested edit on Kepler's third law doesn't give earth's orbital period! Why?
Apr
8
revised Why isn't jumping from a high altitude fatal?
Copy edited.
Apr
8
suggested suggested edit on Why isn't jumping from a high altitude fatal?
Apr
6
revised Why does a cup with 100 g water float when placed on another cup with 50 g of water?
(Ref. <http://english.stackexchange.com/questions/15953/how-to-write-units>.)
Apr
6
revised Why does a cup with 100 g water float when placed on another cup with 50 g of water?
Copy edited.
Apr
6
suggested suggested edit on Why does a cup with 100 g water float when placed on another cup with 50 g of water?
Apr
6
suggested suggested edit on Why does a cup with 100 g water float when placed on another cup with 50 g of water?
Mar
25
revised How can photons interact with anything?
Copy edited.
Mar
25
suggested suggested edit on How can photons interact with anything?