Toxn Posted December 27, 2021 Report Share Posted December 27, 2021 1 hour ago, Lord_James said: In retrospect, this is definitely the wrong thread to have asked this in, and I phrased my question poorly. Attempt 2: Why do micro organisms just “fall apart” immediately after they die? Do the forces or biological processes, that occur when they’re alive, maintain their outer layer? Being a novice, I would think it’s similar to larger organisms where it just stops maintaining itself after death and decay is more gradual, as the bonds between all the molecules eventually fail over time (or are broken down by a scavenging creature). Maybe that’s just my engineering student brain trying to make sense of weird, stinky organic stuff by comparing it to machines and/or macro biology. (should probably move this discussion to somewhere more appropriate, but I’ll let someone else make that decision) Perhaps move the conversation to an appropriate thread in the bio section? Quote Link to comment Share on other sites More sharing options...
Alzoc Posted December 27, 2021 Report Share Posted December 27, 2021 1 hour ago, Lord_James said: Attempt 2: Why do micro organisms just “fall apart” immediately after they die? Do the forces or biological processes, that occur when they’re alive, maintain their outer layer? Being a novice, I would think it’s similar to larger organisms where it just stops maintaining itself after death and decay is more gradual, as the bonds between all the molecules eventually fail over time (or are broken down by a scavenging creature). Maybe that’s just my engineering student brain trying to make sense of weird, stinky organic stuff by comparing it to machines and/or macro biology. Video below is a bit repetitive, but at least rather short and visual If you want to go a bit further, in both case of cell death the membrane play a critical role : Quote Lord_James 1 Quote Link to comment Share on other sites More sharing options...
Lord_James Posted December 27, 2021 Report Share Posted December 27, 2021 10 hours ago, Toxn said: Perhaps move the conversation to an appropriate thread in the bio section? I looked for a “general biology” thread, but couldn’t find one, the closest being the biotech and engineering thread, and I don’t think my question fits in there. But, alzoc provided a decent enough answer. I do have new questions to clarify some things for me, but I will drop those if no one cares to answer. Quote Link to comment Share on other sites More sharing options...
Domus Acipenseris Posted December 29, 2021 Report Share Posted December 29, 2021 https://www.youtube.com/watch?v=utVx9X88Wmk Unicellular life forms eating each other. Quote Link to comment Share on other sites More sharing options...
Domus Acipenseris Posted January 7, 2022 Report Share Posted January 7, 2022 This video shows what appears to be a 3D CAD of the French Model 1897 artillery piece. It shows how the mechanisms on the cannon work. The channel has torpedoes and other arms as well. https://www.youtube.com/watch?v=6tW4GRWhue4 DrPlop and LoooSeR 2 Quote Link to comment Share on other sites More sharing options...
Alzoc Posted January 11, 2022 Report Share Posted January 11, 2022 History of the development of the French railway system and it's impact on shaping the country (or why you can't avoid transit through Paris if you want to go anywhere else). Manual subtitles included (which can be decently auto translated in English) Quote Link to comment Share on other sites More sharing options...
Domus Acipenseris Posted January 15, 2022 Report Share Posted January 15, 2022 Animations of Royal Navy Equipment. https://www.youtube.com/channel/UChaymRC0lCdRGlQ000YhpMg Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted January 19, 2022 Report Share Posted January 19, 2022 Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted January 21, 2022 Report Share Posted January 21, 2022 Quote Link to comment Share on other sites More sharing options...
Alzoc Posted February 4, 2022 Report Share Posted February 4, 2022 Nice images from the 1980's TGV speed record (380 km/h) where you can see the C-160 Transall filming just ahead of the train. Wait until 2007 and the train can go about 60 km/h faster than the C-160 top speed. LoooSeR 1 Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted February 18, 2022 Report Share Posted February 18, 2022 Alzoc 1 Quote Link to comment Share on other sites More sharing options...
Alzoc Posted February 18, 2022 Report Share Posted February 18, 2022 18 hours ago, LoooSeR said: This is something that have always pissed me off. We waste huge amounts of money and ressources on wind turbines and photovoltaic panels while their benefits are marginal given that power storage for electrical applications is not (and never will be) efficient, because physics. On the other hand we have untapped available tidal power, which power output is perfectly predictable decades in advance and could easily pair up with existing nuclear hydraulic power plants. Load following on nuclear power plants is not a common thing to do (most country simply use them at full power the whole time) but it's far from impossible (EDF have been doing it for decades). If I remember correctly, the potential both in the UK and in France is about 3 GW each (roughly equivalent to 3 nuclear plants) and 12,5 GW for the whole Europe. It certainly won't solve the issue by itself but there absolutely no reason not to tap into that power for rich country that can afford it. Quote Link to comment Share on other sites More sharing options...
Lord_James Posted February 18, 2022 Report Share Posted February 18, 2022 3 hours ago, Alzoc said: This is something that have always pissed me off. We waste huge amounts of money and ressources on wind turbines and photovoltaic panels while their benefits are marginal given that power storage for electrical applications is not (and never will be) efficient, because physics. On the other hand we have untapped available tidal power, which is perfectly predictable decades in advance and could easily pair up with existing nuclear hydraulic power plants. Load following on nuclear power plants is not a common thing to do (most country simply use them at full power the whole time) but it's far from impossible (EDF have been doing it for decades). If I remember correctly, the potential both in the UK and in France is about 3 GW each (roughly equivalent to 3 nuclear plants) and 12,5 GW for the whole Europe. It certainly won't solve the issue by itself but there absolutely no reason not to tap into that power for rich country that can afford it. As a counter point, wind turbines kill many many birds, and tidal turbines will probably be just as deadly to ocean life, some of which is already struggling due to over-fishing and pollution in general. That is, of course, if it’s built like a wind turbine, and not like some kind of tidal dam, but the locations you can build tidal dams is limited, and could still pose risks with fish finding their way into the turbines. Quote Link to comment Share on other sites More sharing options...
Toxn Posted February 21, 2022 Report Share Posted February 21, 2022 On 2/18/2022 at 5:35 PM, Lord_James said: As a counter point, wind turbines kill many many birds, and tidal turbines will probably be just as deadly to ocean life, some of which is already struggling due to over-fishing and pollution in general. That is, of course, if it’s built like a wind turbine, and not like some kind of tidal dam, but the locations you can build tidal dams is limited, and could still pose risks with fish finding their way into the turbines. I think this is a bit of a misnomer - wind turbines without any bird-scaring features (such as painting one blade black) kill plenty of birds. But far, far less than an equivalent coal power plant does. I'd expect tidal power to kill plenty of fish and crabs and such, but again far, far less than, say any form of technology which involves jetting a huge plume of heated or briny water into the sea (ie: nuclear power or desalination plants). Really, the biggest issue with tidal is just that it's damn hard to make anything with moving parts that doesn't degrade or get encrusted with sea life after a few years. The sea is not a happy environment for anything with moving bits that's also supposed to sit in one spot for years on end without maintenance. Jeeps_Guns_Tanks and Lord_James 2 Quote Link to comment Share on other sites More sharing options...
Domus Acipenseris Posted February 21, 2022 Report Share Posted February 21, 2022 12 hours ago, Toxn said: I think this is a bit of a misnomer - wind turbines without any bird-scaring features (such as painting one blade black) kill plenty of birds. But far, far less than an equivalent coal power plant does. I'd expect tidal power to kill plenty of fish and crabs and such, but again far, far less than, say any form of technology which involves jetting a huge plume of heated or briny water into the sea (ie: nuclear power or desalination plants). Really, the biggest issue with tidal is just that it's damn hard to make anything with moving parts that doesn't degrade or get encrusted with sea life after a few years. The sea is not a happy environment for anything with moving bits that's also supposed to sit in one spot for years on end without maintenance. What if we built massive amounts of solar thermal and used the "waste" heat to desalinate seawater? Pump the water in the daytime and let the water flow through turbines on its way to its destination in the night. Excess heat can make hydrogen. Hydrogen can react with carbon dioxide to make synthesis gas. Synthesis gas can go into the Fischer-Tropsch process. Other hydrogen can make ammonia, eliminating the need for natural gas to make ammonia. Quote Link to comment Share on other sites More sharing options...
Toxn Posted February 22, 2022 Report Share Posted February 22, 2022 12 hours ago, Domus Acipenseris said: What if we built massive amounts of solar thermal and used the "waste" heat to desalinate seawater? Pump the water in the daytime and let the water flow through turbines on its way to its destination in the night. Excess heat can make hydrogen. Hydrogen can react with carbon dioxide to make synthesis gas. Synthesis gas can go into the Fischer-Tropsch process. Other hydrogen can make ammonia, eliminating the need for natural gas to make ammonia. I'm not sure what you're responding to here tbh. Quote Link to comment Share on other sites More sharing options...
Domus Acipenseris Posted February 22, 2022 Report Share Posted February 22, 2022 10 hours ago, Toxn said: I'm not sure what you're responding to here tbh. Sorry if it was not clear. I proposed a way to store electrical energy generated by solar. My proposal does not put any moving parts in a marine environment and does not kill birds with turbine blades. Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted February 23, 2022 Report Share Posted February 23, 2022 I had one, in blue. Quote Link to comment Share on other sites More sharing options...
Jeeps_Guns_Tanks Posted February 24, 2022 Report Share Posted February 24, 2022 I had a jet one, that I can not find any images of. Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted March 24, 2022 Report Share Posted March 24, 2022 Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted July 3, 2022 Report Share Posted July 3, 2022 Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted July 4, 2022 Report Share Posted July 4, 2022 And of course Spoiler Lord_James and Alzoc 1 1 Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted July 18, 2022 Report Share Posted July 18, 2022 Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted August 12, 2022 Report Share Posted August 12, 2022 Quote Link to comment Share on other sites More sharing options...
LoooSeR Posted August 28, 2022 Report Share Posted August 28, 2022 Remains of Soviet Union is subtropics. Ninurta made another incredible video of abandoned locations in Abkhazia. Quote Link to comment Share on other sites More sharing options...
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