elegance78
elegance78 t1_jcoaeqz wrote
Reply to comment by Jarlentium in How do greenhouses actually work? by _Dnikeb
https://youtu.be/oqu5DjzOBF8 For the first time I actually understood what earth scale "greenhouse" effect is. The stupid name does so much damage.
Actual greenhouses - infrared escapes through the glass easily and heat losses are very high at night. To the extent that growers measure this with pyrgeo sensors and take actions to prevent it (closing thermal screens so that plants "see" the warm screen material instead of the -50C clear night sky.
They work by trapping warmed air (warmed either by sun or warmed by hot water pipes). Actual trapping works by greatly limiting air exchange. In fact, there is not enough air exchange capacity to even out inside temperature of an empty greenhouse and outside temperature on warm summer day. We rely on the moisture transpired by the plants to cool down the greenhouse. To achieve this we limit the air exchange - it may be 40C outside but it can be 31-33C inside.
We also enrich air with co2 to 1000ppm. Only way this affects the inside temperature is the effect it has on plant transpiration.
elegance78 t1_jaxvf8e wrote
Reply to comment by simcoder in Half of all active satellites are now from SpaceX. Here’s why that may be a problem by ye_olde_astronaut
I am talking about their own low orbit comsats.
elegance78 t1_jaxuisb wrote
Reply to comment by simcoder in Half of all active satellites are now from SpaceX. Here’s why that may be a problem by ye_olde_astronaut
Yes. Puts the incessant whining about SpaceX into perspective.
elegance78 t1_jaxsun0 wrote
Reply to comment by South_Barnacle_9760 in Half of all active satellites are now from SpaceX. Here’s why that may be a problem by ye_olde_astronaut
That's the beauty of China putting up their constellation - they won't give a flying fuck about your pearl clutching.
elegance78 t1_j1tv47i wrote
Reply to comment by Purple-Commission-24 in How would you make 1000 dollars with 100 Dollars? by Positive-Shake6886
Remember they get fuel efficiency of about 20L/100km though.
elegance78 t1_j1rxoc3 wrote
Reply to comment by HornyJamal in Robots Are Replacing Workers Lost in the Pandemic. They're Here to Stay. by jormungandrsjig
It might eventually. Though it will be preparing paperwork/precedents/defense in 2025.
elegance78 t1_j1qmamz wrote
Reply to comment by one_hyun in Robots Are Replacing Workers Lost in the Pandemic. They're Here to Stay. by jormungandrsjig
You are applying normalcy bias to new technology (AI). It has been always normal for manual labour to be replaced by technology. This time the technology is more suited to replace office based jobs. The learning data is there, easily obtainable.
elegance78 t1_j1q7jn4 wrote
Reply to comment by Northernmost1990 in Robots Are Replacing Workers Lost in the Pandemic. They're Here to Stay. by jormungandrsjig
Let's see how that works out for you. We sure will be living in very interesting times shortly...
elegance78 t1_j1piebv wrote
Reply to comment by one_hyun in Robots Are Replacing Workers Lost in the Pandemic. They're Here to Stay. by jormungandrsjig
Lawyers, administrators, programmers, accountants will be some of the first occupations lost to AI (might very well be with release of GPT-4 next year). Anything office based will be on the chopping block. Artistic occupations included. Based on current state of AI and automation, manual jobs will be the last to go.
elegance78 t1_ixz80sw wrote
Yeah, total clickbait and wrong. If anything, the recent papers indicate presence of much less water in Jezero than expected.
elegance78 t1_iuhi9x4 wrote
Reply to comment by c0rzaaa in TSMC reportedly building 1nm chip fab in northern Taiwan by Saltedline
How is the housing crash going comrade? Did you see the GDP numbers for Hong-Kong today?
elegance78 t1_jdq28kr wrote
Reply to Loss of fatty acid degradation by astrocytic mitochondria triggers neuroinflammation and neurodegeneration (Mar 2023) by basmwklz
Anyone qualified would like to comment? Seems like a big deal with regards to root causes of Alzheimer's disease.