#481
mt.real
Post rating: +
surprise late entry, Notre Dame de Paris cathedral
#482
Post rating: +

drwhat posted:

surprise late entry, Notre Dame de Paris cathedral



2bad it wasnt the elysee

#483
e^πi + 1 = 0
Post rating: +
being able to tell op-ed writers to hang themselves on twitter

its better than coke
#484
Post rating: +
Twitter will survive the apocalypse in the form of graffiti arguments on walls ergo pompeii's graffiti
#485
Post rating: +
i remember back in the early 00s i would often see writing on a bathroom stall wall that featured the same two or three styles of handwriting going back and forth arguing about something, and thus concluded this must have been the original form of the internet message board. with the proliferation of smartphones, i have anecdotally observed a decline in toilet wall scrawls
#486
UNUSUALY COOL
Post rating: ~

Constantignoble posted:

i remember back in the early 00s i would often see writing on a bathroom stall wall that featured the same two or three styles of handwriting going back and forth arguing about something, and thus concluded this must have been the original form of the internet message board. with the proliferation of smartphones, i have anecdotally observed a decline in toilet wall scrawls



#487
UNUSUALY COOL
Post rating: ~
Egg-carrying Alaskan salmon are dying because the water in Alaska is too hot. If you won't think of society's ills, at least think of our dentist bills!
#488
Post rating: ~
yeah if you ever need to be depressed check out that video
#489
Dont Mess With Sucess
Post rating: ~
https://brasil.elpais.com/brasil/2019/08/19/politica/1566248656_245830.html
#490
Dont Mess With Sucess
Post rating: +
https://blogs.scientificamerican.com/observations/scientists-have-been-underestimating-the-pace-of-climate-change/
#491
Post rating: ~

swampman posted:

https://brasil.elpais.com/brasil/2019/08/19/politica/1566248656_245830.html


The Folha de S. Paulo reported on August 14 that farmers around the BR-163, in southwestern Pará, had announced on 10 "day of fire." In the following hours, INPE recorded an explosion of fire outbreaks in the region. Acre has declared a state of environmental alert for the increase in the number of fires in the state.

#492
Post rating: ~
dootaloo dootaloo dootaloo do do do

https://www.wunderground.com/cat6/Second-Hottest-September-US-History



#493
Post rating: +
it so hot in here
#494
Post rating: +
#495
UNUSUALY COOL
Post rating: +
fist of the north star dot gif.
#496
Post rating: +
https://heliogen.com/ has a demo plant for solar-thermal with secret sauce of closed-loop mirror focus control... reason this is really good news is, solar thermal today maxes out around 600C, but you can't do much w/ 600C except extract work in a heat engine. at higher temps, like their 1000C today and 1500C tomorrow, well at around 2500C, water splits into hydrogen + oxygen spontaneously, the reaction equilibrium flips sides. but even approaching the equilibrium temp, required energy input to drive the reaction over equilibrium, drastically decreases. 1000-1500C is useful for concrete production (~10% of emissions iirc) and other reactions, which had till now no substitute except natural gas fired heaters. the max temp solar thermal can achieve is the temperature of the sun's surface. even if the purpose is just driving heat engines, the carnot efficiency of an engine is ( T(hot) - T(ambient) ) / T(hot), you can plug values in and see the efficiency climb as T(hot) rises. it's crazy if the secret is just closed-loop mirror control, because you could potentially do that in a backyard setup with enough tuning.
#497
Post rating: ~
imagine you are explaining closed loop mirror control to a moron
#498
Post rating: +
it's like if someone gave us a laser pointer and was like, now point it up there, at that helicopter... open loop is like trying to fuck with the pilot, while blindfolded & have ear plugs in. closed loop is getting to use eyes & ears, to see where the red dot lands, & adjust aim. it just means instant feedback.

open loop control
closed loop control b/c it senses walls https://www.youtube.com/watch?v=8IO6ED0p1Sk
#499
Post rating: +
ok here's me with a laser

#500
Post rating: ~
press release with actual technical details: https://www.geekwire.com/2019/company-backed-bill-gates-claims-breakthrough-concentrated-solar-energy-promising-replace-fossil-fuels-industrial-plants/

so it's an incremental improvement over existing concentrated solar tech that utilizes bitcoin and fortnite machines to better orient the mirrors for a tighter beam focus. pretty neat but ill just keep my bitcoins tyvm