# User contributions

- 02:40, 10 December 2016 (diff | hist) . . (+310) . . 1504: Opportunity (→Explanation: added reference to what-if xkcd) (current)
- 00:07, 17 May 2015 (diff | hist) . . (+110) . . Talk:765: Dilution (Added comment)
- 02:33, 6 May 2015 (diff | hist) . . (+165) . . Talk:1464: Santa (More comments)
- 02:45, 1 June 2014 (diff | hist) . . (+2) . . 647: Scary (→Explanation: fixed the English, no change in meaning)
- 03:06, 20 May 2014 (diff | hist) . .
**(+798)** . . 1047: Approximations (→Explanation: added proof for the cosine identity) - 02:34, 20 May 2014 (diff | hist) . . (+246) . . Talk:1047: Approximations (added: Dgbrt, yes, sin(6π/7)=sin(π/7). Simple proof: sin(6π/7)=sin(π-π/7)=sin(π)cos(-π/7)+cos(π)sin(-π/7)=0*cos(-π/7)+(-1)*(-sin(π/7))=0+sin(π/7)=sin(π/7))
- 22:54, 18 May 2014 (diff | hist) . . (-11) . . 1047: Approximations (→Transcript: transcript showed cube root of 2, should be square root of 3, divided by 2.; made an "o" lowercase)
- 03:22, 25 April 2014 (diff | hist) . . (+49) . . 899: Number Line (→Explanation: 8 isn't prime)
- 07:00, 10 April 2014 (diff | hist) . . (+342) . . Talk:1351: Metamaterials (→Linking to Photonic Metamaterial for the Physics or Engineering-inclined: new section)
- 04:14, 15 March 2014 (diff | hist) . . (+87) . . 1342: Ancient Stars (→Explanation: added explanation of the 14 Bright Star Catalogue items that are not stars)