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Topics	Replies	Views	Last post
Physics, Astronomy & Cosmology \ Why can I cycle faster than the fastest runner runs? Started by thedoc	29	22546	Last post by hiseri 11/11/2013 18:50:53
Physics, Astronomy & Cosmology \ How high and fast can a person skydive from? How fast? Started by CliffordK	17	13379	Last post by distimpson 16/10/2013 15:29:39
Physics, Astronomy & Cosmology \ How much force on a bicycle pedal? Started by Cheese2001	2	23908	Last post by imatfaal 15/10/2012 14:42:06
Physics, Astronomy & Cosmology \ earths age 6000 years or 4.5 billion? Started by acecharly	8	4855	Last post by Ophiolite 14/10/2012 04:08:25
Physics, Astronomy & Cosmology \ Does an aeroplane weigh less when flying at high altitude? Started by Airthumbs	24	15019	Last post by Geezer 24/03/2012 07:22:40
General Science \ Proper pie to celebrate pi day? Started by CZARCAR	9	4474	Last post by wolfekeeper 17/03/2012 18:55:59
Physics, Astronomy & Cosmology \ Why do we orbit the sun if space is not flat? Started by acecharly	5	3995	Last post by Cheese2001 17/03/2012 04:46:42
General Science \ Why Does A Litre Of 100C Water Have MORE Mass Than When The Water Cools To 4c ? Started by neilep	8	8221	Last post by Cheese2001 17/03/2012 04:24:51
Technology \ Is there a history of Solid-fuel Gas-turbines experiments? Started by peppercorn	8	7200	Last post by peppercorn 13/03/2012 16:31:49
General Science \ Why Can We Feel Heat When Space Is So Cold Between Sun And Earth ? Started by neilep	8	31432	Last post by damocles 11/03/2012 22:00:06
Physics, Astronomy & Cosmology \ Earth Gravity anomaly Started by greeniemax	27	24535	Last post by Sprool 08/03/2012 12:14:37
Question of the Week \ QotW - 12.03.11 - How would I know if a meterorite was falling towards me? Started by thedoc	6	6215	Last post by CZARCAR 07/03/2012 18:46:12
The Environment \ Changing the temperature of water (this is alot more interesting that you think) Started by Lou Diaco	28	13000	Last post by damocles 06/03/2012 21:17:46
Physics, Astronomy & Cosmology \ How is light produced from an atom? Started by greeniemax	27	30844	Last post by greeniemax 05/03/2012 08:32:38
General Science \ What happens when light travels through a transparent object, like glass? Started by chris	2	17756	Last post by Cheese2001 05/03/2012 00:36:49
General Science \ What stops the blades of a propeller-driven aircraft from icing? Started by chris	11	11548	Last post by Cheese2001 05/03/2012 00:06:59