Recent comments in /f/explainlikeimfive
kinyutaka t1_jacjkms wrote
Reply to comment by ScienceIsSexy420 in ELI5: What's hard about copying photosynthesis or just using plants for power by No_Dust_5360
We can and probably are trying that very thing, but the way plants do it creates sugars and fibers, not creating free electrons.
It's just not something that we can replicate completely for our purposes.
One thing we might be able to do is capture the carbon emissions from burning plant material, like sugars, then use the CO2 from those emissions to feed a new generation of photoelectric cells. There would probably be loses in the system, but...
einmaldrin_alleshin t1_jacjjlu wrote
Reply to comment by ScienceIsSexy420 in ELI5: What's hard about copying photosynthesis or just using plants for power by No_Dust_5360
Plants are significantly less efficient than solar panels, particularly because they are limited by the amount of CO2 that they can get. 400 PPM is a lot when it comes to climate change, but when you're trying to synthesize carbohydrates, that's a problem.
On top of that, photosynthesis only works in a narrow temperature range, it requires a lot of water that just gets evaporated, and it requires minerals and nitrogen, which have to be produced expending a lot of energy.
[deleted] t1_jacjgoj wrote
Reply to comment by UnitSignificant2866 in eli5 What is the purpose of those little “I am not a robot” buttons. Can a robot seriously not detect and click them? by Lord-Zippy
[deleted]
MercurianAspirations t1_jacj8zg wrote
Reply to comment by ScienceIsSexy420 in ELI5: What's hard about copying photosynthesis or just using plants for power by No_Dust_5360
Fine, I'll delete my responses.
BingDongPiW t1_jacj4go wrote
Reply to comment by georgecoffey in eli5 What is the difference between Iron and Steel? by georgecoffey
Over 2% carbon is cast iron while steel typically is in the .1 to .5 range, but can get up to that 2% line. Wrought iron is roughly .08 and under. I’m not sure of how wide the buffer zone is where one starts to become the other
ScienceIsSexy420 t1_jacj18h wrote
Reply to comment by [deleted] in ELI5: What's hard about copying photosynthesis or just using plants for power by No_Dust_5360
Right, the question is about the electrons generated by photo system 1 and photo system 2 during photosynthesis, and harnessing that as a means of electricity production. So by responding by saying photosynthesis doesn't generate energy, you're missing the fundamental aspect of the question in my opinion
ScienceIsSexy420 t1_jacivow wrote
Reply to comment by kinyutaka in ELI5: What's hard about copying photosynthesis or just using plants for power by No_Dust_5360
But that's not what the question was asking about. The question was asking about utilizing the chemistry of photosynthesis for a new generation of photoelectric cells, which is both more efficient than burning fossil fuels as well as being better for the environment. This is an area of active and ongoing research, and shouldn't be dismissed by simply saying " burning fossil fuels is better"
thisusedyet t1_jaciqqk wrote
Reply to comment by Gnonthgol in ELI5 How are there graffitis in unbelievable/dangerous spots? by [deleted]
>secure themselves to the best of their efforts with safety harnesses
Anyone ever take advantage of their safety harness to make it look like they fell off mid-job with a trail of paint down the structure?
Fwahm t1_jaciqlb wrote
Reply to ELI5: why do dental visits in 🇺🇸 cost insured patients so much compared to medical visits? by FirstAd6848
Fixing a tooth is a minor surgery, not equivalent to just seeing a specialist. I'd compare it more to something like an MRI, which is comparable in price to putting a crown on a tooth.
Their prices are pretty similar after insurance; free to $30 or so for just a visit, and $500-1000 for a minor surgery or using a heavy-duty test.
LondonDude123 t1_jaciqfz wrote
Reply to ELI5: How can a 100GB game get an 80GB update and still be about the same size afterwards? by MissAJHunter
Youre talking about Destiny 2 arent you...
Its because the way Bungie works their updates for the big expansions is you essentially re-download the entire game twice, and then it switches over to the "new game" when its done and deletes the "old game"
demanbmore t1_jacipus wrote
Reply to ELI5: Why do corporate logo redesigns cost so much money when the change is relatively simple? by [deleted]
Design and development of alternative logos and branding materials, including complete mock up of products, stores/restaurants, ads, etc. Focus groups, surveys, polling. Psychological studies, etc. When you're a multi-billion dollar brand with established worldwide recognition, you dot every I twice and cross every T three times when assessing any significant changes to your branding and image. Does it need to cost millions? Certainly not, but they're given a big budget and they're going to use all of it in case things don't go smoothly - those in charge of developing a new look want to be able to say they turned over every possible rock, explored every possible idea, etc.
AlchemicalDuckk t1_jacin8t wrote
Reply to ELI5: Why do corporate logo redesigns cost so much money when the change is relatively simple? by [deleted]
You're only seeing the final product, not the work that goes into it. You might have graphics designers churn out a dozen or more different variations. Those logos need to be checked against any other existing trademarks. At some point, they also need to be tested in focus groups so that the average person can draw a link between the old logo and the new one; or if it's a new logo completely, ask if the logo makes enough of an impression for people to remember it later. There's research into whether the logo can be recognizable in all kinds of situations (e.g., what happens if you shrink it down to a 32x32 pixel square for social media? Etc.). Then there's all the regulatory and business hurdles of actually updating it.
AnnonymousRedditor86 t1_jacimtu wrote
Reply to comment by TheRealSmallBean in ELI5: Why is it that when fertilizers make their way into waterways, all the oxygen disappears, killing the fish? by Psychological-Dog994
Thank you for explaining this so succinctly. Would you please come with me to Congress to explain this to all the states bordering the Mississippi River so that we might begin to reduce the huge dead zone in the Gulf of Mexico when half the nation's fertilizer runs off into it?
PM_ME_A_PLANE_TICKET t1_jacikzr wrote
Reply to comment by Murdercorn in ELI5: Why is it that if I want my shower to be warmer, if I turn the cold-water knob to the right (closer to off), the water in the shower gets significantly colder for about 30 seconds, then MUCH colder for about 5 seconds, then super hot? Why would closing the cold water make it colder? by [deleted]
My best guess is you need to replace some stuff. Something's probably halfway broken in your taps.
kinyutaka t1_jaciiuk wrote
Reply to comment by ScienceIsSexy420 in ELI5: What's hard about copying photosynthesis or just using plants for power by No_Dust_5360
The point he was trying to make with his answer is that burning plant material (wood) or fossil material (coal) is the most efficient way of getting the energy out of a plant.
It is dirty and bad for the environment, but it is efficient.
[deleted] t1_jacihxa wrote
Reply to comment by ScienceIsSexy420 in ELI5: What's hard about copying photosynthesis or just using plants for power by No_Dust_5360
[deleted]
Phage0070 t1_jacicvf wrote
Reply to ELI5: Why is it that if I want my shower to be warmer, if I turn the cold-water knob to the right (closer to off), the water in the shower gets significantly colder for about 30 seconds, then MUCH colder for about 5 seconds, then super hot? Why would closing the cold water make it colder? by [deleted]
Your submission has been removed for the following reason(s):
ELI5 is not for straightforward answers or facts - ELI5 is for requesting an explanation of a concept, not a simple straightforward answer. This includes topics of a narrow nature that don’t qualify as being sufficiently complex per rule 2.
If you would like this removal reviewed, please read the detailed rules first. **If you believe it was removed erroneously, explain why using this form and we will review your submission.
rubseb t1_jacics6 wrote
Reply to comment by Phage0070 in Eli5 why do stairwells need to be have two flights in a spiral to go up one floor when escalators can just use the one flight going straight up for the same distance? by exmxn
Yep.
(Of course two flights of stairs are also two flights of stairs. But yeah, the cost thing.)
kinyutaka t1_jaciav7 wrote
Reply to comment by No_Dust_5360 in ELI5: What's hard about copying photosynthesis or just using plants for power by No_Dust_5360
Probably not. Biological drive would cause the plants to grow larger if excess energy is provided.
im_the_real_dad t1_jaciaaf wrote
Reply to comment by AliMcGraw in Eli5: How did people know how long a year was in olden times? by Slokkkk
So you're saying that the lunar cycle appears to be 23 days long to some women and it appears to be 33 days long to other women and to still other women the moon goes through the lunar cycle in some number of days in between?
Phage0070 t1_jaci5kx wrote
Reply to comment by rubseb in Eli5 why do stairwells need to be have two flights in a spiral to go up one floor when escalators can just use the one flight going straight up for the same distance? by exmxn
Technically that is two escalators which increases the cost.
Real-Rude-Dude t1_jaci4ur wrote
Reply to comment by Ben-Z-S in eli5 What is the purpose of those little “I am not a robot” buttons. Can a robot seriously not detect and click them? by Lord-Zippy
>>Even just moving your mouse might be enough to determine if you're "real" as its actually quite difficult to simulate realistic movement.
A good way to show this is to open paint and then try and draw a straight line or a circle. It's not perfect. Now think about the equation or commands it would take to program a bot to draw that not-perfect line or circle.
ScienceIsSexy420 t1_jaci4h9 wrote
Reply to comment by Murdercorn in ELI5: Why is it that if I want my shower to be warmer, if I turn the cold-water knob to the right (closer to off), the water in the shower gets significantly colder for about 30 seconds, then MUCH colder for about 5 seconds, then super hot? Why would closing the cold water make it colder? by [deleted]
I have never experienced this phenomenon so I really can't say anything other than it doesn't make much sense why this would happen
rubseb t1_jaci2o3 wrote
Reply to comment by Phage0070 in Eli5 why do stairwells need to be have two flights in a spiral to go up one floor when escalators can just use the one flight going straight up for the same distance? by exmxn
You could do the same thing with an escalator by having a landing in the middle, and this does happen at times.
Gnonthgol t1_jacjp1h wrote
Reply to comment by thisusedyet in ELI5 How are there graffitis in unbelievable/dangerous spots? by [deleted]
That is the kind of thing you only do once. The safety harnesses are designed to be survivable, not comfortable.