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Q&A

Posts tagged light

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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 1y ago by JBH‭  ·  last activity 1y ago by KalleMP‭

Question agriculture light
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Q&A What would this nebula look like from a planet?

I have a binary system. The primary star is F- or G-class; the secondary is K-class, 20AU away, and in a small reflection nebula (suggested here). A planet orbits the primary in the habitable zon...

3 answers  ·  posted 7y ago by Monica Cellio‭  ·  edited 2y ago by Monica Cellio‭

Question stars nebula light
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Q&A How can I safely brighten my secondary star?

I have an earth-like planet orbiting one of the stars in a binary system. I have learned that, for G-class stars, if the secondary star is 100AU from the primary one, I can expect the secondary st...

5 answers  ·  posted 7y ago by Monica Cellio‭  ·  edited 2y ago by Monica Cellio‭

Question stars light
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Q&A How do seasons work in a binary system (planet orbits one star, not both)?

I have a planet orbiting one star in a binary system. When the planet is exactly between the two stars it will experience a double day; when the primary sun sets the secondary one rises, no overla...

5 answers  ·  posted 7y ago by Monica Cellio‭  ·  edited 2y ago by Monica Cellio‭

Question planets stars light
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Q&A Would a sapient being sensitive to polarized light be able to see the angle of polarization in a photograph?

Many animals have the ability to see polarized light (or rather, are sensitive to the direction of polarization), most notably birds and bees but also a wide range of other animals including cephal...

7 answers  ·  posted 2y ago by user2352714‭  ·  last activity 2y ago by user2352714‭

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Q&A Would it be possible for humans to fly with mechanical wings?

This is something I'm thinking about. Now, these would be wings that are not powered by the person themself, since we do not have the strength for it (and I don't want to use legs). They'd be power...

3 answers  ·  posted 2y ago by Jenny‭  ·  last activity 2y ago by Jenny‭

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Q&A Is radar better than visible light in deep space?

On the earths surface, radar is pretty sweet. It apparently penetrates the atmosphere well and bounces back and can be detected. I think this has to do with the wavelengths absorbed by our atmosp...

8 answers  ·  posted 2y ago by Willk‭  ·  last activity 2y ago by Willk‭

Question space light
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Q&A What is the best form of powered vehicular flight within a McKendree habitat?

Background A McKendree cylinder is a spinning space habitat in the style of an O'Neill cylinder (below), but orders of magnitude larger. McKendree habitats are hundreds of kilometres in diameter a...

3 answers  ·  posted 3y ago by rek‭  ·  last activity 2y ago by rek‭

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Q&A An Earth with a permanent winter state with drastically reduced temperature, dark skies and mass extinctions

I had posted a question a couple of days ago asking if it would be possible for an artificial satellite/cosmic body at the L1 orbit to block out the Sun, but the logistics of that is a little too e...

1 answer  ·  posted 3y ago by Space_Cadet‭  ·  last activity 3y ago by Space_Cadet‭

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Q&A how big does my creature's organ need to blind or stun predator of all size?

Ok so my creature will look like this They're not big, about 2 feet tall. They're technically amphibians but have the scaly hide of a reptile. They live near the sea. Their life cycle is simila...

4 answers  ·  posted 3y ago by user3556983‭  ·  last activity 3y ago by user3556983‭

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Q&A Harnessing energy directly from the sun via quantum tunneling

In the universe of my story, the Earth is ridden with metahumans with uncanny powers that do all sorts of different things. Of course, to do all this, they would require a tremendous amount of ener...

2 answers  ·  posted 3y ago by Strivs‭  ·  last activity 3y ago by Strivs‭

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Q&A Science of Green Lantern and solid light constructs

Many know that the Lantern Corps of DC Comics are capable of constructing objects of any shape or size out of hard light using their power ring fueled by their emotions. However, I'm wondering what...

1 answer  ·  posted 3y ago by Strivs‭  ·  last activity 3y ago by Strivs‭

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Q&A What FTL models are appropriate given my constraints?

I'd like to have faster-than-light travel (and communications) be an late-game option for a video game I am working on. The extent of the playable universe is approximately 4 million light years in...

5 answers  ·  posted 3y ago by John O‭  ·  last activity 3y ago by John O‭

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Q&A Would a life-bearing Earth-like world with 3g average gravity produce more or fewer flying creatures than Earth?

On one hand, heavier gravity would make flying more difficult, owing to greater weight restrictions on the flying creatures' bodies. On the other hand, the greater density of the atmosphere on ...

2 answers  ·  posted 3y ago by James Grossmann‭  ·  last activity 3y ago by James Grossmann‭

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Q&A How can a "magic" mirror flash blind people?

My "magic" mirrors are purely technological and are only able to transmit light. More precisely, they can display the visible and infrared spectrums, and communicate via radio waves. They're basica...

3 answers  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

Question technology light
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Q&A Can cherenkov effect be used for telling how fast FTL spaceship moves?

Imagine an alternate universe where FTL do happens, let's just say the inhabitants discovered a hypothetical particles that allows ordinary matter to temporarily be in superposition of any amount o...

1 answer  ·  posted 3y ago by user6760‭  ·  last activity 3y ago by user6760‭

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Q&A So, how do I put the extra muscle, needed for flight, into a large flying creatures like dragons?

I've been thinking about this the whole day. At first I thought it was an easy fix, given my dragon's bones have a tensile strength of 3-6.5 GPa and an elastic modulus of 50-140 GPa, depending on t...

3 answers  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

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Q&A Can we safe FTL from paradoxes by using a Multiverse?

As we know, bi-directional faster than light (FTL) travel can cause paradoxical situations. One possible way to resolve this would be a multiverse theory: Whenever a paradox could arise, the univer...

5 answers  ·  posted 3y ago by mart‭  ·  last activity 3y ago by mart‭

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Q&A How to build a wormhole for FTL communication? [more Engineering than Physics question]

I came to SE WB while I was researching about space radiators for my sci-fi. I don't remember where exactly I found an answer to my question (Maybe? Idr) but I stunned with this site. You all looks...

2 answers  ·  posted 3y ago by Rodolfo Penteado‭  ·  last activity 3y ago by Rodolfo Penteado‭

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Q&A A dragon, a gryphon and a tengu are flying toghether. How can they actually communicate?

One problem, I think writers often overlook, is the problem of flying creatures communicating with each other. I call this the "I can't hear you over the sound of the f@cking headwind!" For my wor...

2 answers  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

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Q&A Can a "boneless" flying creature exist?

The creature was originally a human, altered by an external agent that basically remade its body (carbon based). The creature is roughly 2 meters and relatively light. It is humanoid and boneless, ...

3 answers  ·  posted 3y ago by ProjectApex‭  ·  last activity 3y ago by ProjectApex‭

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Q&A How can my Mage Light spell work?

While I'm working on the Magical Artillery, let's look at another common spell. Mage Light is a very handy invention. When cast, the spell creates an orb, 13 cm in diameter. The orb radiates whi...

4 answers  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

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Q&A How can a dragon take off to the air silently?

Imagine a dragon as tall as average adult horse with a wing span of 12m long measuring from tip to tip. I wonder what evolutionary traits or techniques could allow the dragon to lift itself off the...

12 answers  ·  posted 3y ago by user6760‭  ·  last activity 3y ago by user6760‭

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Q&A Why would a bird have split wings?

On my world there is a creature that has a 'split' in the plumage of its wings and tail. Instead of having a singular D-shaped surface (when viewed from above, the bird facing to the left), it is ...

7 answers  ·  posted 3y ago by A Lambent Eye‭  ·  last activity 3y ago by A Lambent Eye‭

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Q&A How to explain a planet around a K-Type star with Orange/Red/Purple plants?

Basically, in a sci-fi roleplaying group I am apart of, I have began to work on a long-standing human colony world. The tech-level is pretty much bog-standard sci-fi, and such, colonisation is poss...

3 answers  ·  posted 3y ago by McGerridae‭  ·  last activity 3y ago by McGerridae‭

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Q&A How would a bird's flight change entering the zero gravity axis of an O'neil cylinder?

This question on space stack begins to tackle how a bird could fly inside an O'Neill cylinder, https://space.stackexchange.com/questions/27665/can-birds-fly-inside-an-oneill-cylinder. Here is the ...

1 answer  ·  posted 3y ago by RandySavage‭  ·  last activity 3y ago by RandySavage‭

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Q&A Mesas of hard(solid) light

I searched the site and found answers saying hard light can't exist. Apparently in the three years since the last question was asked, scientists started making inroads on making solid light a reali...

1 answer  ·  posted 3y ago by Firelocke‭  ·  last activity 3y ago by Firelocke‭

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Q&A Humans surviving on surface without Sun

Is it possible for humans to survive on the surface of the Earth, assuming the Sun was, for some reason, not emitting any light/heat/other radiation? Would whether the Sun was actually present affe...

2 answers  ·  posted 5y ago by Adrian Zhang‭  ·  last activity 3y ago by Adrian Zhang‭

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Q&A Could you fly a Boeing 747 on Venus?

I have been making a future colonization scenario where people have vast colonies on Mars and cloud top bases on Venus. These things are unbelievably large. I've already thought of a way to travel ...

4 answers  ·  posted 3y ago by Greenie E. - Reinstate Monica‭  ·  last activity 3y ago by Greenie E. - Reinstate Monica‭

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Q&A Navigating a sea of sulfur hexafluoride

Sulfur hexafluoride is pretty awesome. It is a gas six times denser than regular air, and thus you can actually make tinfoil "boats" float on it. It also makes your voice deep when you breathe it i...

3 answers  ·  posted 3y ago by KeizerHarm‭  ·  last activity 3y ago by KeizerHarm‭

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Q&A Aerodynamics of propeller vs screw/fin based aerial propulsion

Would it make sense to use screw- and fin-like bending surfaces for propulsion (like what eels or the king of herrings have but in the atmosphere) instead of regular propellers or even flapping win...

1 answer  ·  posted 3y ago by user72590‭  ·  last activity 3y ago by user72590‭

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Q&A What would the view from a spaceship traveling through inter-galactic space look like?

My character is traveling aboard a spaceship through inter-galactic space (it has left the Milky Way). The ship is traveling at the speed of light or so and has been for the last six thousand years...

1 answer  ·  posted 3y ago by marmel‭  ·  last activity 3y ago by marmel‭

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Q&A Would cold-blooded dragon be suitable for flying?

I am designing a cold-blooded dragon about the size of a house cat with a wingspan of 3 metres from tip to tip. It will climb on top of rocks at noon when there is ample sunlight overhead. I need i...

2 answers  ·  posted 3y ago by user6760‭  ·  last activity 3y ago by user6760‭

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Q&A How would a Dyson Swarm transmit energy to the Earth?

The Dyson Swarm is common in sci fi as an energy source, and sometimes also as a powerful weapon. As it is commonly understood, it harnesses the energy of the sun, which stores a vast amount of ene...

5 answers  ·  posted 3y ago by CYCLOPSCORE‭  ·  last activity 3y ago by CYCLOPSCORE‭

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Q&A Scientific explanation for summoned creatures

Throughout the ages, The Summoners were a prominent family of mages (but technology is magic here), who possess the ability to call forth creatures from cards. Of course they can only summon creatu...

3 answers  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

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Q&A Could powered exoskeletons enable humans to fly?

I have seen people saying that humans can't fly even with wings because our arm muscles aren't strong enough. Given that one of the uses of powered exoskeletons is to increase strength, would th...

7 answers  ·  posted 5y ago by Ajnatorix Zersolar‭  ·  last activity 3y ago by Ajnatorix Zersolar‭

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Q&A Does gliding flight give any advantages to dragons in combat?

"They fly now?" "They fly now!?" "They fly now" One of the most iconic characteristic of dragons is their ability to fly, on top of that, my intelligent (human level) dragons also use a fu...

7 answers  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

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Q&A Could you make Bat wings shaped like the different kinds of Bird wings?

I've been designing an an intelligent, bat-inspired avian race, and I've been struck with a question that I need answered. Now, I want to have these bats to fulfill different types of ecological n...

6 answers  ·  posted 5y ago by Lot-Of-Malarkey‭  ·  last activity 3y ago by Lot-Of-Malarkey‭

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Q&A Would it be possilble to light the dark side of a tidally locked planet using fiber optics from the right side?

Assume planetary-scale cables are easily constructed, and subsequently ignored. I am assuming these cables would run just under the surface of the planet from one side to the other for minimal mai...

1 answer  ·  posted 3y ago by Jerry‭  ·  last activity 3y ago by Jerry‭

Question planets physics light
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Q&A Optimal posture for hexapodal dragon while flying?

So, the dragons of my setting were inspired by several things, which include D&amp;D dragons, a mockumentary and Asian water monitors. Now, dragons look something similar to this: They glide for...

3 answers  ·  posted 3y ago by Mephistopheles‭  ·  last activity 3y ago by Mephistopheles‭

Question dragons flight light
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Q&A Would this dragon-rider combo be physically plausible?

Taking into account the some limitations of the square-cube law, biology, and aviation, I have tried to make a dragon-like creature and a hominid that participate in a symbiotic relationship. For ...

2 answers  ·  posted 3y ago by Cas‭  ·  last activity 3y ago by Cas‭

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Q&A Could a person safely walk around with exposed skin under the sunlight of a red dwarf when it's not flaring?

I've been thinking about a fantasy setting built around the idea of a habitable, tidally-locked world orbiting a red dwarf. Since it is fantasy I do have some leeway in terms of the real world limi...

2 answers  ·  posted 4y ago by Vorterox‭  ·  last activity 3y ago by Vorterox‭

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Q&A What colour would a flat world's sky be?

In continuation of my previous question, I'm wondering about the colour of a flat world's sky. To recap the previous question, I'm imagining a flat world with the sun fixed relatively low above th...

1 answer  ·  posted 3y ago by Haem‭  ·  last activity 3y ago by Haem‭

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Q&A Can a horse-sized flying creature grab and carry a human's weight while flying?

As you know, mythical animals like the gryphon, dragon, wyvern, roc, etc can carry things as they fly. For a big creature to fly, it either needs to massively increase the spread of their wings or...

2 answers  ·  posted 3y ago by Li Jun‭  ·  last activity 3y ago by Li Jun‭

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Q&A How fast would a civilization with FTL spread out?

Let's say that a civilization has access to FTL. Let's say it is instantaneous so travel time between solar systems isn't a factor. How long would it take for them to spread out from their home sol...

10 answers  ·  posted 3y ago by Jonas‭  ·  last activity 3y ago by Jonas‭

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Q&A Does living without access to sunlight for extended periods have known physical or psychological effects on humans?

Humans (even programmers :-) ) are used to having some access to natural light, but in a colony in space, on the dark side of a tidally-locked planet, or underground (for example) this won't happen...

6 answers  ·  posted 8y ago by Monica Cellio‭  ·  last activity 3y ago by Monica Cellio‭

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Q&A Lightning striking full plate "” what's the damage to the wearer?

I have a knight fighting a dragon with an electric breath weapon, I'm wondering what would actually happen when the knight was struck by the weapon, assuming it has the power of a 'regular' lightni...

2 answers  ·  posted 8y ago by Mourdos‭  ·  last activity 3y ago by Mourdos‭

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Q&A Can an Io-like world exist in such conditions to allow this character to fly?

This character has a set of dragonfly-like wings. These are not normal for her species, and would normally be something of a birth defect requiring amputation. But through liberal application of Cl...

2 answers  ·  posted 3y ago by CAE Jones‭  ·  last activity 3y ago by CAE Jones‭

Question planets flight light
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Q&A How can a being that can create electric attacks use targeted lightning storm strikes?

I found one question that deals with how to make lightning from clouds strike a target person, Can we make lightning strike a certain person? but I am looking for something that doesn't involve tec...

1 answer  ·  posted 3y ago by RandySavage‭  ·  last activity 3y ago by RandySavage‭

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Q&A How bright is the night with 18-22 AU distant star?

In my previous question, I asked about how close can two stars in a binary system be for planets around them to stay earthlike, assuming that both stars have very sunlike and both planets very eart...

1 answer  ·  posted 3y ago by Failus Maximus‭  ·  last activity 3y ago by Failus Maximus‭

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