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13k posts
 
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Q&A What is the most efficent way of killing prey much larger than yourself?

The Honey Badger is known to kill water buffalo by ripping out their scrotum and letting them bleed out. Mostly out of spite I think for being disturbed, they mostly eat small game, honey, bee lar...

posted 2y ago by KalleMP‭

Answer
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Q&A The more horizontal a building (on planet earth) is, the more years it can survive a collapse?

You can't go by the shape of the building alone. No matter what the shape, presumably structural engineers carefully considered how the building will support itself. Buildings are not single mono...

posted 2y ago by Olin Lathrop‭

Answer
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Q&A The more horizontal a building (on planet earth) is, the more years it can survive a collapse?

This is general mechanics: all objects have a center of gravity. On a square-shaped house, this center is right in the middle, at coordinates (width/2, height/2). The wider the building is in relat...

posted 2y ago by Lundin‭

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66%
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Q&A Could grow lights on a massive scale replace 100% of sunlight for 100% of the growing season?

There are multilevel automated food plant farms in existence that are artificially illuminated. Sure they may use skylights but they have many times the growing area so the plants are not getting ...

posted 2y ago by KalleMP‭

Answer
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Q&A The more horizontal a building (on planet earth) is, the more years it can survive a collapse?

The question may seem stupid but for someone with both a fear of heights and a collapse anxiety can choose renting/buying an apartment in a very horizontally wide building and a very vertically wid...

2 answers  ·  posted 2y ago by deleted user  ·  last activity 2y ago by Olin Lathrop‭

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Q&A Could grow lights on a massive scale replace 100% of sunlight for 100% of the growing season?

You can hand-wave the right types of lights that produce the right mix of wavelengths, but you can't hand-wave away the power requirements. Sunlight reaching the earth's surface is about 1.2 kW/m2...

posted 2y ago by Olin Lathrop‭  ·  edited 2y ago by Olin Lathrop‭

Answer
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Q&A Could grow lights on a massive scale replace 100% of sunlight for 100% of the growing season?

In a world where pollution and population have drastically reduced the effectiveness of sunlight to grow food, would light-panels be capable of completely replacing the sun? The problem I'm trying...

2 answers  ·  posted 2y ago by JBH‭  ·  last activity 2y ago by KalleMP‭

Question agriculture light
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Q&A A single beam laser treatment to both remove hair and flatten a scar

Easy answer: No You're using the same technology to do two different things: remove hair and remove or encourage healing of scar tissue. Hair removal uses a laser frequency that's absorbed by...

posted 2y ago by JBH‭

Answer
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Q&A Digging Depressions in seafloor to create artificial islands in nearby areas

This is already done today The UAE artificial islands use material dredged from the sea bottom to ceate the islands. But is it sustainable? The easy answer is "no." You're not creating islands o...

posted 2y ago by JBH‭  ·  edited 2y ago by JBH‭

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Meta A few questions as I dip my toes in the water here

That's a lot of questions all lumped together in one, and as I don't have an hour or two to write up good answers for each of them, short ones will have to do for now. There are 500+ tags, app...

posted 2y ago by Canina‭

Answer
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Meta A few questions as I dip my toes in the water here

I took the tour and was told that questions about magic wouldn't find a place here. That's when I started looking around. There are 500+ tags, apparently not a single one of them has a summary...

1 answer  ·  posted 2y ago by JBH‭  ·  last activity 2y ago by Canina‭

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Meta Where does this differ from a regular Science Q&A?

As I see it, the operative word in answering the question you're asking here is speculation. Now, of course, it's almost impossible to capture every nuance in a site name, which is why we have a pa...

posted 2y ago by Canina‭  ·  edited 2y ago by Canina‭

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Meta Where does this differ from a regular Science Q&A?

I have some interest with this site, but if I want to ask something, I'll need to properly figure out if it's suitable to post it in SciSpec CD. Considering that this site is different from a site...

1 answer  ·  posted 2y ago by General Sebast1an‭  ·  last activity 2y ago by Canina‭

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Q&A Making a hair cream without using any lipids/oils

Making a hair cream without using any lipids/oils, is it possible? What will be a fundamental composition of such a cream that it is easy to wash from the hands?

0 answers  ·  posted 3y ago by deleted user  ·  edited 3y ago by deleted user

Question chemsitry cosmetics
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Q&A A single beam laser treatment to both remove hair and flatten a scar

In all my reading about laser treatments I always found laser treatments which can be applied either for hair removal or for scar flattening (or other unique uses) but I never came across a laser t...

1 answer  ·  posted 3y ago by deleted user  ·  last activity 2y ago by JBH‭

Question laser
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Q&A Digging Depressions in seafloor to create artificial islands in nearby areas

Small islands have been built in inland waters since prehistoric times, but using sea floor material to build an offshore island is a much larger project. As Peter Taylor and JBH have pointed out,...

posted 3y ago by Pastychomper‭  ·  edited 2y ago by Pastychomper‭

Answer
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Q&A Digging Depressions in seafloor to create artificial islands in nearby areas

Should digging Depressions in seafloor to create artificial islands in nearby areas be sustainable And by the way, was it widely done somewhere in this planet already?

2 answers  ·  posted 3y ago by deleted user  ·  last activity 2y ago by Pastychomper‭

Question sea-exploration
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Q&A Creatine supplementation as enhancing the natural production of Carnosine and vice versa

Possibly, but I think it's unlikely, except indirectly. Exercise increases natural carnosine levels, so someone who both takes extra creatine and uses the energy to increase their exercise level p...

posted 3y ago by Pastychomper‭  ·  edited 3y ago by Pastychomper‭

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Q&A Natural ways to acquire gravity and heat for a colony on earth's moon

Gravity You seem to assume that the Moon's mass is mostly concentrated in its core. While I didn't find detailed data on the Moon's density distribution, this Wikipedia page tells that the density...

posted 3y ago by celtschk‭  ·  edited 3y ago by celtschk‭

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Q&A Natural ways to acquire gravity and heat for a colony on earth's moon

There seem to be two separate questions here: Would a moon colony need to be deep underground to get more gravity? No. This is basic physics. Going deeper into the a gravitational body reduces ...

posted 3y ago by Olin Lathrop‭  ·  edited 3y ago by Olin Lathrop‭

Answer
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Q&A Natural ways to acquire gravity and heat for a colony on earth's moon

Is a colony on earth's moon must be deeply underground to ensure more natural gravity (by getting closer to its core) as well as more natural heat? By natural heat I mean "without the need of arti...

2 answers  ·  posted 3y ago by deleted user  ·  edited 3y ago by deleted user

Question moons
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Q&A Creatine supplementation as enhancing the natural production of Carnosine and vice versa

I understand that both Creatine and Carnosine are amino acid derivates abundant in Animalia muscle tissue and are both occasionally taken by non-aerobic exercisers to enhance performance. The huma...

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by Pastychomper‭

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Q&A A hair product which is both a lipid ointment and a gel

Nivea have developed a hair product which I personally found very special among this filled-with-generic-stuff market of products, which is named in German "Creme-Gel": I find Nivea's Creme-Gel sp...

1 answer  ·  posted 3y ago by deleted user  ·  last activity 1y ago by James McLellan‭

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Q&A How does radiotherapy destroys proximal (subcutaneous) fat cells? [closed]

From my prior research I understand that there are several ways to remove or destroy proximal (subcutaneous) fat cells: Liposuction (primarily removal) Cryolipolysis (primarily destruction by f...

0 answers  ·  posted 3y ago by deleted user  ·  edited 3y ago by deleted user

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Q&A Could a habitable planet lit by the cosmic microwave background plausibly exist?

A back of the envelope calculation suggests that you need a velocity relative to the CMBR of more than 0.9c. (1mm microwaves blue-shifted to 570nm light typical of yellow dwarves) This is a proble...

posted 3y ago by dsr‭

Answer