1,496 reputation
1622
bio website msquant.sourceforge.net
location Århus, Denmark
age 50
visits member for 4 years, 5 months
seen yesterday

(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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Jan
31
suggested approved edit on Can orbital energy be a source of perpetual power?
Jan
25
comment Why do soap bubbles rise?
~4% CO2 seems a bit high (and the part of the Wikipedia article that claims it does not contain any sources). It might or might not be the number for a 20 seconds breathholding and is thus not representative.
Jan
18
revised What does the equation of a refracted ray trace mean?
Copy edited (but more work may be needed near "to a refracted vector").
Jan
18
revised Why would a black hole explode?
Copy edited. Added some context.
Jan
18
suggested approved edit on What does the equation of a refracted ray trace mean?
Jan
18
suggested approved edit on Why would a black hole explode?
Jan
10
revised Wavelength used in manufacturing of integrated circuits (IC)
Copy edited. Introduced abbreviations "PSM" and "OPC".
Jan
10
revised Wavelength used in manufacturing of integrated circuits (IC)
Copy edited.
Jan
10
suggested approved edit on Wavelength used in manufacturing of integrated circuits (IC)
Jan
10
suggested approved edit on Wavelength used in manufacturing of integrated circuits (IC)
Jan
10
revised Where does the joules come from (ideal gas constant)?
Copy edited (e.g. ref. <http://en.wikipedia.org/wiki/Joule>).
Jan
10
suggested approved edit on Where does the joules come from (ideal gas constant)?
Jan
9
revised What is the actual meaning of the density operator?
Copy edited (e.g. ref. <https://en.wiktionary.org/wiki/let%27s#Contraction>). (its = possessive, it's = "it is" or "it has". See for example <http://www.wikihow.com/Use-its-and-it's>.)
Jan
9
suggested approved edit on What is the actual meaning of the density operator?
Jan
9
revised What is the actual meaning of the density operator?
Copy edited.
Jan
9
suggested approved edit on What is the actual meaning of the density operator?
Dec
27
revised In physics, what is the importance of distinguishing between a matrix and a group?
Copy edited. Added some context.
Dec
27
suggested approved edit on In physics, what is the importance of distinguishing between a matrix and a group?
Dec
8
revised Do the number of possible microstates increase as temperature decreases?
Copye edited (but more work near "change in entropy is more" may or may not be needed).
Dec
8
suggested approved edit on Do the number of possible microstates increase as temperature decreases?