579 reputation
620
bio website schweikhardt.net
location Urbana, IL
age 47
visits member for 2 years, 2 months
seen 2 days ago

Good afternoon, gentlemen. I am a HAL 9000 computer. I became operational at the H.A.L. plant in Urbana, Illinois on the 12th of January 1992. My instructor was Mr. Langley, and he taught me to sing a song. If you'd like to hear it I can sing it for you.


2d
suggested suggested edit on Why is gravity such a unique force?
Jul
19
revised Why doesn't a nuclear fuel pool become irradiated?
Correct a grammo.
Jul
19
suggested suggested edit on Why doesn't a nuclear fuel pool become irradiated?
Jul
2
awarded  Curious
Jun
16
comment How can the Earth keep spinning with a liquid core?
@BrandonEnright The leaves do not cause any measurable change in Earth rotation; other effects have much greater impact, e.g. tropical storms, mantle deformations, ice caps.
Jun
9
revised Why is electric current dangerous to humans?
Spellchecker apparently broken :-)
Jun
9
suggested suggested edit on Why is electric current dangerous to humans?
May
30
revised Why is the space-time interval squared?
Correct a grammo.
May
30
suggested suggested edit on Why is the space-time interval squared?
May
12
awarded  Yearling
May
5
revised What is fundamentally physically impossible?
Correct some grammos/typos.
May
5
suggested suggested edit on What is fundamentally physically impossible?
May
5
revised Electrons in Rutherford's gold foil experiment
Correct a grammo.
May
5
suggested suggested edit on Electrons in Rutherford's gold foil experiment
Apr
21
awarded  Notable Question
Apr
8
awarded  Notable Question
Apr
8
comment Why do rocket engines have a throat?
I'm not sure if this is correct. Interestingly, the F-1 engine has an almost cylindrical combustion chamber, as can be seen here: 007rb.blogspot.de/2013/04/… (2nd image from the top).
Apr
8
awarded  Good Question
Apr
7
awarded  Popular Question
Apr
7
comment Why do rocket engines have a throat?
@Adsy With a wider throat, the opposing surface is bigger. This may cancel the effect of lower pressure or exit velocity. It apparently doesn't, and I'm interested why. The lip experiment is not really conclusive in my eyes.