1,504 reputation
1622
bio website msquant.sourceforge.net
location Århus, Denmark
age 50
visits member for 4 years, 6 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


Shortcuts:


My other accounts:

Stack Overflow (SO). [/].

Server Fault (SF). [/].

Super User (SU). [/].

Meta Stack Overflow (MSO). [/].

Careers. [/].

Other

My 15 minutes of fame on Super User

Blog. Sample: Jump the shark.

LinkedIn profile

@PeterMortensen (Twitter)

Google profile

Quora profile

GitHub profile

Full jump page with other SOFU related, Stack Exchange sites, etc.


Contact

I can be contacted through this reCAPTCHA (requires JavaScript to be allowed from google.com).


Feb
13
suggested approved edit on What happens before a radioactive element decays?
Feb
6
revised Why do most formulas in physics have integer and rational exponents?
Copy edited (e.g. ref. <https://en.wiktionary.org/wiki/let%27s#Contraction>). Added some context.
Feb
6
revised Why do most formulas in physics have integer and rational exponents?
Copy edited (e.g. ref. <http://english.stackexchange.com/questions/2429/can-doubt-sometimes-mean-question>).
Feb
6
suggested approved edit on Why do most formulas in physics have integer and rational exponents?
Feb
6
suggested approved edit on Why do most formulas in physics have integer and rational exponents?
Jan
31
revised Can orbital energy be a source of perpetual power?
Copy edited. Removed meta information (this belongs in the user profile).
Jan
31
revised Can orbital energy be a source of perpetual power?
Copy edited. Removed meta information (this is implied).
Jan
31
suggested approved edit on Can orbital energy be a source of perpetual power?
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)?