1,520 reputation
1622
bio website msquant.sourceforge.net
location Århus, Denmark
age 50
visits member for 4 years, 7 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
9
revised What is the actual meaning of the density operator?
Copy edited.
Dec
27
revised In physics, what is the importance of distinguishing between a matrix and a group?
Copy edited. Added some context.
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
6
revised If photons don't have charge, why are they deflected by charged black holes?
Copy edited.
Dec
4
revised How is wind created?
Copy edited (but more work is needed near "I mean"). Removed meta information (this belongs in comments, if any).
Dec
4
revised How is wind created?
Copy edited (this is not Yahoo Answers, <http://knowyourmeme.com/memes/how-is-babby-formed>, but perhaps an even better verb exist? - "come about"?).
Dec
1
revised Does the mass of an electron change with its “energy state”?
Copy edited. (its = possessive, it's = "it is" or "it has". See for example <http://www.wikihow.com/Use-its-and-it's>.)
Nov
28
revised Why does rotation simulate gravity if motion is relative?
Copy edited. (its = possessive, it's = "it is" or "it has". See for example <http://www.wikihow.com/Use-its-and-it's>.)
Nov
1
revised The sound of rotating helicopter blades
Copy edited.
Oct
27
revised How would one detect antihydrogen in the universe?
Copy edited (ref. <https://en.wikipedia.org/wiki/Antihydrogen>).
Oct
5
revised Why are EM waves transverse?
Copy edited. (its = possessive, it's = "it is" or "it has". See for example <http://www.wikihow.com/Use-its-and-it's>.)
Aug
24
revised Can a human size object move so fast that it ceases to be observable?
Copy edited (but perhaps it should be MathJax'ed). Dressed the naked link.
Aug
24
revised Can a human size object move so fast that it ceases to be observable?
Copy edited (e.g. ref <https://en.wiktionary.org/wiki/let%27s#Contraction>) - but there is still room for improvement. Removed meta information (this belongs in comments).
Aug
24
revised Can a human size object move so fast that it ceases to be observable?
Copy edited.
Aug
23
revised How much voltage should be applied to an object to create a certain amount of charge?
The unit is coulomb.
Aug
1
revised Temperature of a neutron star
Copy edited (e.g. ref. <https://en.wiktionary.org/wiki/everyday#Adjective> and <https://en.wiktionary.org/wiki/made_up#Verb>) - though more work on the last sentence is probably needed.
Jul
30
revised Why do we take small steps while walking on ice?
Copy edited.
Jul
30
revised Complex Dirac field in antiparticle description
Copy edited.
Jul
30
revised In scattering, how does a particle 'know' which direction it is being illuminated from?
Copy edited.
Jul
24
revised Why are silicon-silicon bonds weak?
Copy edited.