1,851 reputation
21027
bio website skepsi.me
location
age 22
visits member for 3 years, 7 months
seen Dec 3 at 18:56

Sep
22
awarded  Notable Question
Jul
9
awarded  Famous Question
Jul
2
awarded  Curious
Jun
9
awarded  Nice Question
May
28
comment Why is absolute zero considered to be asymptotical? Wouldn't regions such as massive gaps between galaxy clusters have temperatures of absolute zero?
You mentioned that "the only way we can get heat out is to place our system in contact with something cooler" - but what about techniques that don't use thermal conduction, e.g. laser cooling?
May
3
awarded  Yearling
Dec
5
comment Why can we see the cosmic microwave background (CMB)?
@Alfe: There are many things that we don't know for certain, however the universe's size does not correspond directly to its age for various reasons (for example, inflation). In addition, the universe does not have a "center" from which the CMBR began propagating - it began propagating from roughly every point in the universe as the temperatures cooled. So we will never "see the last of" the CMBR, we will merely see it cool and become more sparse.
Nov
7
awarded  Popular Question
Oct
31
awarded  Popular Question
Sep
20
awarded  Notable Question
Aug
29
awarded  Notable Question
Jun
9
awarded  Famous Question
May
3
awarded  Yearling
Apr
8
awarded  Popular Question
Mar
7
awarded  Editor
Mar
7
revised When will the Moon reach escape velocity?
added 1 characters in body
Nov
26
awarded  Caucus
Nov
19
awarded  Citizen Patrol
Nov
7
awarded  Nice Question
Oct
11
awarded  Popular Question