[HN Gopher] Optical-Cavity-Induced Current ___________________________________________________________________ Optical-Cavity-Induced Current Author : graderjs Score : 64 points Date : 2021-09-10 06:05 UTC (1 days ago) (HTM) web link (www.mdpi.com) (TXT) w3m dump (www.mdpi.com) | aaaaaaaaaaab wrote: | Cool! Free electricity! | mrfusion wrote: | Any thoughts on where the energy comes from? | _Microft wrote: | Reference [24] seems to be important. | | _" The source of these optical modes could be the quantum vacuum | field, which gives rise to the Casimir force [18,19,20,21], the | Lamb shift [22], and other physical effects [23]. It was argued | that the use of energy from the vacuum field does not violate | fundamental laws of thermodynamics [24]."_ | | Despite the importance of the question of ,,where the heck does | the energy for that come from", they give it surprisingly little | space in the paper. | | [24] | https://scholar.google.com/scholar_lookup?title=Extracting+E... | nine_k wrote: | If it's just incoming photons, a photovoltaic element that does | not need doped monocrystalline silicon might be a valuable | find. | plutonorm wrote: | Maybe this is dark matter. All those civilisations out there | plugged directly into the background juice of the universe make | it more 'grabby', slowing the rotation of galaxies. I always | put my mad ideas out onto the internet because if they prove to | be true then I have bragging rights. | | I'm still reading through ref 24 - that's the one that | immediately grabbed my attention. Anyone know if the authors | have some authority in the subject? | oofabz wrote: | What is the practical application of this? Free energy? | plutonorm wrote: | yup.literally free energy. | [deleted] | tantony wrote: | There's a video version: | https://www.youtube.com/watch?v=2tGRhTXKh8A | | I will remain skeptical until it is independently reproduced and | verified and gets demonstrated at scale. | varjag wrote: | Yup. The presentation (and the paper) are very light on math, | argue by analogies and dismissive about USPTO's rather | reasonable policy to discard inventions contradicting 2nd law | of thermodynamics. The author is undoubtedly a technical person | but gives off the vibe of someone trying to casually wing it | into quantum physics. | | Since am not a physicist myself I could well be proven wrong | tho. In that case this reply gotta end up infamous! | atlas_hugged wrote: | I'm not a physicist but even I can tell this dude isn't either. | My quack alarms were ringing within seconds of watching this | video, but I watched the whole thing anyway to see if I was | judging too harshly and he actually had discovered something | notable. This guy spent more time attacking scientists, peer- | review, and just generally the process of science itself than | actually just showing some damn proof. You would think one | would be showing video demonstrations of this unbelievable | effect. He tempers his claims by saying that it scales with a | larger area and it produces less power than a solar panel of | equivalent size and I thought... ok, let's say I'm completely | wrong and this guy just invented a "solar panel" type of device | that can be used without visible light yet produces less | energy... I suppose that could still be fairly useful depending | on the application. Bravo, well done if that's the case. Go | ahead and make one or 10 panels or whatever and set it up in an | empty warehouse with a 24/7 video feed and show it continuously | charging an electric car, or powering a tv, or hell even | powering a light bulb. I'll retweet. I'll be a customer even if | it's just for fun checking out this new dangled tech. No, he | suddenly starts talking about how he could potentially create | coin cell sized battery of infinite power among other far | fetched sounding claims. Say what??? Maybe my quick math is off | by several orders of magnitude but this threw off so many quack | alarms that it's just way beyond belief. I hope and pray that | I'm wrong and the rather modest initial claim is somehow | correct even if it's for reasons he doesn't understand. Yes, it | is ok to not understand why something works, as long as it gets | you results. Who cares what anyone thinks? Start a tiny energy | company out of pocket with however many panels you can make. | Sell electricity and profit from it. Go nuts. Get rich. | Eventually people will realize whether they like it or not that | you have something worth looking at. Look, I totally get that | most scientific discoveries start off with a statement of: | "huh, that's weird"... but that doesn't mean you get to declare | that the whole world is against you. "They" are not just | jealous. "They" are not just afraid of violating current | understandings of science. Scientists incorporate new | understandings fairly regularly. Sure a couple people might be | jealous they didn't figure something out first, but that | doesn't mean every scientist on earth is out to get you. Holy | hell this turned into a rambling rant. I apologize. It was just | a stream of thought that I don't care to edit at this point. | I'm sorry this came across so rude. Make me a customer sir. | I'll joyfully put a sock in it if you succeed. | nynx wrote: | The description seems reasonable, but given how many times | "zero-point energy" has been shown not to be harvestable, it's | unlikely that this is the time it worked. | tantony wrote: | This may turn out to be another EMDrive. But the implications | of this claim being true are too great to ignore and warrants | further investigation. | | I wonder what it would take in terms of expense/equipment to | do an independent verification. | rbanffy wrote: | It's a bit like the FTL neutrinos. We knew it couldn't be, | but the data showed otherwise, so they got to check | everything down to the cable connections. | exmadscientist wrote: | The EMDrive is a better example, I think. The OPERA | people knew from the start that they likely had an | "uncontrolled systematic" and their measurement was | likely to be wrong, so very few people got excited. The | EMDrive got a lot of people excited over a minor error in | a very difficult measurement. In both cases the general | "science" public picked up on it, inappropriately, but in | only one of the two cases were the flames fanned by the | research team. (Compare also the Pioneer anomaly [0].) | | I do suspect this is just another EMDrive. Interacting | with the vacuum to shift energy around is well-known | (again, see Hawking radiation [1]), but holding on to it | overall for long enough to violate the uncertainty | principle (the one for the E-t commutator) doesn't work. | And I don't think you can hold it just long enough to | reverse entropy... though that doesn't sound prima facie | impossible. Making a measurement incorrectly, though... I | do that every day I'm in the lab. | | Addition: Also, the MDPI journals are kinda-sorta just | one step up from trash-tier, at least in my mind, so I | don't pay much attention to work that can only manage to | get in to one of them. | | [0] https://en.wikipedia.org/wiki/Pioneer_anomaly | | [1] https://en.wikipedia.org/wiki/Hawking_radiation | | [2] https://en.wikipedia.org/wiki/Uncertainty_principle | ...at least I think it's in there somewhere. Otherwise | grab Griffiths! | tantony wrote: | They also got published in an APS journal - "Physical | Review Research" | | https://journals.aps.org/prresearch/abstract/10.1103/Phys | Rev... | | However, I do not know how reputable that particular | journal is. | tinco wrote: | Do I understand correctly that this is an effect that had not | been predicted by any theory? And they assume it could be caused | by some quantum effect but they have not worked out a full theory | on it, I presume because that's simply not their ballgame. | plutonorm wrote: | It seems to have been predicted by the lead author, who has | then got a third party to manufacture and verify the device's | function. I believe the function of the device is predicted | from theories surrounding the Casimir effect. ___________________________________________________________________ (page generated 2021-09-11 23:00 UTC)