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Topics	Replies	Views	Last post
Physics, Astronomy & Cosmology \ Can a heat pump system generate electricity from temperatures over 0 Kelvin? Started by McKay	50	41717	Last post by passtere9 04/05/2022 17:20:24
Physics, Astronomy & Cosmology \ Charged metal plate blocks/absorbs gamma radiation bette then a uncharged plate? Started by McKay	8	6018	Last post by Bored chemist 09/11/2019 11:48:34
Physics, Astronomy & Cosmology \ Two low energy photons for one high energy photon in fluorescence possible? Started by McKay	6	4167	Last post by alancalverd 19/05/2019 13:05:28
That CAN'T be true! \ "NASA Confirms "Impossible" Propellant-free Microwave Thruster" - your thought? Started by McKay	6	9397	Last post by Bored chemist 29/08/2018 02:07:48
Physics, Astronomy & Cosmology \ Does the ability to collect microwaves for electric current cut off at some temp Started by McKay	8	3240	Last post by Bored chemist 12/11/2017 16:01:40
Physics, Astronomy & Cosmology \ Is it possible to generate electricity from infra red radiation? Started by McKay	4	2110	Last post by Yahya 06/11/2017 05:02:03
Physics, Astronomy & Cosmology \ Does very light matter make gravity appear weak? Started by McKay	11	3340	Last post by jeffreyH 13/09/2017 22:55:41
Physics, Astronomy & Cosmology \ Is it possible to climb out of a gravity well with less than escape velocity? Started by McKay	10	3222	Last post by yor_on 04/09/2017 08:14:25
Physics, Astronomy & Cosmology \ Is the strength of the Casimir effect the same everywhere? Started by McKay	0	1449	Last post by McKay 25/08/2017 15:57:41
New Theories \ What do you think of pilot-wave view of quantum mechanics? Started by McKay	13	6981	Last post by asdfzxh 20/03/2016 01:48:51
Technology \ Could small, compressible balls be used to negate the effects of ice expansion? Started by McKay	5	4453	Last post by McKay 23/11/2015 17:10:54
Technology \ How much force can a speaker and one-way valve system produce? Started by McKay	6	4842	Last post by alancalverd 09/11/2015 23:39:05
Technology \ Can we pull heat from the ceiling with materials that shrink when heated? Started by McKay	5	6919	Last post by wolfekeeper 13/04/2015 21:43:32
Geek Speak \ HDMI cable weirdness - help me understand Started by McKay	5	5874	Last post by McKay 11/04/2015 21:27:47
Physics, Astronomy & Cosmology \ Can we steal energy from the Earths rotation? Started by McKay	7	8354	Last post by Colin2B 07/04/2015 15:32:45
Physics, Astronomy & Cosmology \ Muon catalyzed fusion of heavy, iron+, elements Started by McKay	4	4767	Last post by McKay 25/03/2015 07:20:52
Physics, Astronomy & Cosmology \ How long to to equalize the temperature of aerogel sealed, supercooled box Started by McKay	6	4624	Last post by evan_au 18/03/2015 10:30:10
Physics, Astronomy & Cosmology \ How are windows letting a lot of heat escape from homes if glass is an insulator Started by McKay	3	3255	Last post by alancalverd 22/02/2015 19:33:40
Technology \ How can I optimise an electric generator with a shaking magnet inside a coil? Started by McKay	14	13771	Last post by matthew austin 10/02/2015 14:46:19
Technology \ Hydrogen cars with built in water splitters? Started by McKay	12	7791	Last post by chiralSPO 25/01/2015 16:17:43