Recent comments in /f/explainlikeimfive
righteousplisk t1_j69enxr wrote
Reply to comment by _ShakashuriBlowdown in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
That’s prison coffee to you, sir.
syds t1_j69dw1z wrote
Reply to comment by opdjmw in ELI5: Why do dead bodies found in homes mummify instead of decay? by i_was_way_off
Im pretty sure my cat would still wake up my ghost from the grave to let him go out pee
Abacab4 t1_j69dhvr wrote
Reply to comment by hyzermofo in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
I’m hopelessly devoted to this methodology.
murmurat1on t1_j69d4ux wrote
Reply to comment by WhiteCloudyPlanet in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
I know I'm only playing
ChronoMonkeyX t1_j69bar3 wrote
Reply to comment by mmmmmmBacon12345 in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
I was wondering where you were going with your analogy, thinking "well, the water wouldn't be electrified while you were drinking it!"
JimmyTheBones t1_j699a6q wrote
Reply to comment by OpenPlex in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
So imagine the horizontal distance, not the diagonal distance.
The front foot is the equivalent of the top of a river up a mountain, and the back foot is the equivalent of the estuary at sea level.
The human's horizontal foot distance is much less, so there is a much smaller difference between the potential from one foot to the other.
SierraTango501 t1_j698u6k wrote
Reply to comment by CBMet in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944
Also, ramjets and scramjets don't work at the speeds that commercial airliners fly at, and turbojets are hugely fuel inefficient.
The engines powering commercial airliners are turbofans, similar in construction to a turbojet, but with a large diameter intake fan, that bypasses a lot of cold air past the compression/ignition stage and mixes it with the exhaust air to generate thrust without burning up a ton of fuel a minute.
n4rf t1_j698rjd wrote
Reply to comment by noopenusernames in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944
Yep! And I've corrected it. Thanks everyone
OpenPlex t1_j697mrn wrote
Reply to comment by JimmyTheBones in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
Doesn't make sense in the context of one horse's leg to another. (vs the distance from one human leg to another being a lower pressure)
Clear_Tie4174 t1_j696tmi wrote
Reply to comment by frakc in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
The Frankenstein effect
Sand_Trout t1_j696rjc wrote
Reply to comment by noopenusernames in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944
It sounds like you're thinking of the propfan
noopenusernames t1_j69635y wrote
Reply to comment by Sand_Trout in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944
Do you happen to remember the name of the type of engine that they experimented with in, I think, the 80’s, maybe early 90’s? It was kind of like a turboprop, but the it looked more like a jet engine. The defining feature was that the “propeller” blades were short and stubby and mounted on what would look like the exhaust cone of a turbine engine, and there were a lot more of of these stubby blades than you’d see on a turboprop. It basically looked like if you took one of the compressor stages off a turbine engine and rotated it inside out so the blades all stuck outward from a central ring, and then slid that ring up onto the exhaust cone of a turbine engine.
I’ve been trying to remember the name of this thing for a long time but have had a dammed hard time finding it. Apparently they were supposed to have the efficiency of something between a turboprop and a turbine, and so airlines really wanted them, but no one pursued them because they thought the general public would think they are “scary-looking” and wouldn’t want to fly on them
noopenusernames t1_j694zl2 wrote
Reply to comment by n4rf in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944
It’s been a while since I’ve studied this. How do they get the ramjets into a forward motion to make them work in the first place.
Also, for scramjets, what kind of changes in engine behavior result from the air being supersonic? Does the air even spend enough time in the engine to burn long enough to put any useful energy into the system? Or is it still burning on its way out (while exiting the exhaust section), kind of creating an explosion just behind the engine that pushes the engine forward?
noopenusernames t1_j694h7c wrote
Reply to comment by ImReverse_Giraffe in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944
The blades do behave like a wing, except in a horizontal direction instead of a vertical direction. I’ve heard people accidentally say ‘lift’ when they mean ‘thrust’ many times, but everyone in the industry knows what they mean just because of the design.
But you are technically correct, which is the best kind of correct!
[deleted] OP t1_j694fiz wrote
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happykittynipples t1_j694d91 wrote
Reply to comment by Rakeallday in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
If I tossed you into a swimming pool and added a few volts it would not pass through you unless you touched a ground, like the metal ladder. Then you would be in trouble. So, you could kill all those tiny bugs but they would need to touch a lot of tiny ladders.
ExNihiloish t1_j693d2d wrote
Reply to comment by ResoluteClover in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
Yeah. Poor little guys.
CulturalIndication1 t1_j692iez wrote
Reply to comment by Juan_Ebolovich in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
Yeah, fuck chromium. I grew up in a town that had a chrome plating factory and they dumped their waste in the creek that ran alongside two schools. I was born with correctable heart defect but damn there were a lot of kids with cancer.
dontmentiontrousers t1_j692apm wrote
Reply to comment by Davebobman in ELI5: How do we define the boundary between earth’s atmosphere and space? by crenshawcrane
This ISS my stop.
ResoluteClover t1_j691yhz wrote
Reply to comment by ExNihiloish in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
To save the bacteria?
Albs610 t1_j691wba wrote
Reply to comment by n4rf in ELI5: What is the difference between turbojet, ramjet, and scramjet? by Global_Maize_8944
Just to clarify a typo for others. The large blade in the front isn't a turbine blade it's a fan blade. That's why they are called turbofans.
ExNihiloish t1_j691vhj wrote
Reply to comment by ResoluteClover in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
Okay but then we need virusesphageses.
JimmyTheBones t1_j691to0 wrote
Reply to comment by OpenPlex in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
Imagine it more as water flowing downhill. Small horizontal distance, not too much change in gravitational potential energy, but from the top of a mountain to the bottom there's a huge difference there.
man-vs-spider t1_j691n5j wrote
Reply to comment by wut3va in ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
There’s typically other things in the water that can be broken down / chemically changed. Even something like salt water can produce chlorine gas
[deleted] t1_j69i1ir wrote
Reply to ELI5: why can't we use electricity to kill microorganisms in small amount of water ? by FreshT3ch
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