What will happen if light doesn't exist?
Well, we would be blind forever. You can convert other frequencies of light (infrared, ultraviolet, etc.) into visible light via technology, but if that conversion produces nothing (according to your scenario) we could never make any conversion our eyes could see because those wavelengths no longer exist.
What would happen if there was no light?
Without sunlight, it would be bleak on earth. There wouldn't be any plants, animals and people. There would be no other form of life. No fossil energy sources such as coal, oil and natural gas would be available to generate energy.
What would happen if visible light didn't exist?
Without it we wouldn't be able to see, stars wouldn't shine, and life would not exist. It is one of the most important principles that governs everything around us.
What would the universe be without light?
There will be no electromagnetic force to keep the electrons around the nucleus. Nucleus would combine and form super dense particles and electrons would be like free particles in space. Matter as we know wouldn't exist. This is just one possible consequence.
Can we live without light?
It is unlikely, though, that an adult could die directly and exclusively from prolonged darkness. Most likely a person would become ill and die from a range of chronic diseases caused by lack of sunshine, such as diabetes, high blood pressure, and tuberculosis.
Can life survive without light?
All plants would die and, eventually, all animals that rely on plants for food — including humans — would die, too. While some inventive humans might be able to survive on a Sun-less Earth for several days, months, or even years, life without the Sun would eventually prove to be impossible to maintain on Earth.
What if the sun disappeared for 1 second?
If the sun disappeared for ONLY ONE SECOND, nobody would notice anything other than no light for a single second. Nothing else. Our orbit would change by less than 1 Km as I've shown.
Will a light work without Earth?
Any light, lamp, bulb holder or fitting with a conductive or metal exterior surface must always be earthed to ensure against risk of electrocution or serious injury. We recommend that any fitting or installation is done by a qualified electrician, do not risk installation yourself if you are at all unsure.
Does light have no time?
From the perspective of a photon, there is no such thing as time. It's emitted, and might exist for hundreds of trillions of years, but for the photon, there's zero time elapsed between when it's emitted and when it's absorbed again. It doesn't experience distance either.
Can darkness exist without light?
More accurately, darkness does not exist by itself as a unique physical entity, but is simply the absence of light. Any time you block out most of the light – for instance, by cupping your hands together – you get darkness.
Is dark matter not real?
About 20% of the matter in galaxies is visible or baryonic: subatomic particles like protons, neutrons and electrons. The other 80%, referred to as “dark matter”, remains mysterious and unseen. In fact, it may not exist at all. “Dark matter” is just a hypothesis.
Why is space dark?
In space or on the Moon there is no atmosphere to scatter light. The light from the sun travels a straight line without scattering and all the colors stay together. Looking toward the sun we thus see a brilliant white light while looking away we would see only the darkness of empty space.
Why is space dark if the sun is in space?
In summary, Space appears black because it's a vast emptiness with very little matter to scatter sunlight. The sun may light up the Earth and its immediate surroundings, but beyond that, space remains a mysterious dark void.
How hot is the sun?
The temperature of the sun varies from around 27 million degrees Fahrenheit (15 million degrees Celsius) at the core to only about 10,000 degrees F (5,500 degrees C) at the surface, according to NASA.
Can life evolve without a moon?
The flow of the tides carries heat from Earth's equator to the poles. Without the moon, Earth might have a very different climate than it does today. This would have likely limited the movement of species around the world. Some plants and animals alive today might not even exist!
Can humans live in sun?
The best we've got is a compound called tantalum carbide, which can handle about 4,000 degrees Celsius max. On Earth, we use it to coat jet-engine blades. So even if we made it this far, we couldn't actually survive down here.
Was there ever a second sun?
Our Sun may once have had a twin companion, astronomers have suggested – like the “binary” stars of Tattooine in Star Wars. Harvard researchers have said another sun was present as the solar system formed, and it could explain features including a cloud of debris at our solar system's edge.
What if the Sun was blue?
We would get more UV radiation, making the earth's surface temperature 10 times hotter (300 K), as hot as the surface of a red giant star. In conclusion, no matter what, with the intense heat and energy of a blue star, life on earth would not be possible.
What if moon disappeared?
It is the pull of the Moon's gravity on the Earth that holds our planet in place. Without the Moon stabilising our tilt, it is possible that the Earth's tilt could vary wildly. It would move from no tilt (which means no seasons) to a large tilt (which means extreme weather and even ice ages).
What is class 1 light?
The vast majority of light fittings are known as class 1 which means they require an earth wire. Fittings which don't require an earth wire will always be marked as class 2 and / or double insulated.
Is brown wire live?
The live wire is Brown
This replaces the old colours of red (live) and black (neutral) and green (earth) which changed back in 2006. If your plug has these colour wires, we recommend that you replace it.
What if bathroom light has no earth?
If your lighting circuit does not have an adequate earth you can either have your wiring upgraded to incorporate an earth or use lighting that is double insulated.
Do wormholes exist?
While researchers have never found a wormhole in our universe, scientists often see wormholes described in the solutions to important physics equations. Most prominently, the solutions to the equations behind Einstein's theory of space-time and general relativity include wormholes.
What is faster light or time?
As far as we know, nothing can go faster than light. However, if one travels close to the speed of light, time behaves differently than we are used to, and in this way, one can move forward in time faster than those left behind. So it is theoretically possible to travel to the future, but one could not return.
What is light made of?
Light is actually energy made of small particles called photons.
Can a light be black?
Black light is a specific reference to light that is not visible. It is a misnomer and refers to UV light. If we look at the visible spectrum, none of the visible light appears black.
Why is light so fast?
Only massless particles, including photons, which make up light, can travel at that speed. It's impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so.
What is faster light or dark?
Most of us already know that darkness is the absence of light, and that light travels at the fastest speed possible for a physical object. So, what does this mean? In short, it means that, the moment that light leaves, darkness returns. In this respect, darkness has the same speed as light.
Are black holes real?
Scientists have found proof that every large galaxy contains a supermassive black hole at its center. The supermassive black hole at the center of the Milky Way galaxy is called Sagittarius A. It has a mass equal to about 4 million suns and would fit inside a very large ball that could hold a few million Earths.
Does dark matter 100% exist?
Dark matter makes up over 80% of all matter in the universe, but scientists have never seen it. We only assume it exists because, without it, the behavior of stars, planets and galaxies simply wouldn't make sense.
Is anti matter real?
But researchers have yet to determine if mysterious tiny particles known as neutrinos, which are also neutral, are their own antiparticles. Although it may sound like something out of science fiction, antimatter is real. Antimatter was created along with matter after the Big Bang.
How is space infinite?
Because space isn't curved they will never meet or drift away from each other. A flat universe could be infinite: imagine a 2D piece of paper that stretches out forever. But it could also be finite: imagine taking a piece of paper, making a cylinder and joining the ends to make a torus (doughnut) shape.
How is the sky blue?
The Short Answer:
Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.
What does space smell like?
Overall, astronauts often compare the smell of space to "hot metal, burnt meat, burnt cakes, spent gunpowder and welding of metal," according to Steve Pearce, a biochemist and CEO of Omega Ingredients, who combed through astronaut interviews to help him craft a NASA-commissioned scent.
Is space pitch black?
Above the Earth's atmosphere, outer space dims even further, fading to an inky pitch-black. And yet even there, space isn't absolutely black. The universe has a suffused feeble glimmer from innumerable distant stars and galaxies.
Why do stars twinkle?
The stars seem to twinkle in the night sky due to the effects of the Earth's atmosphere. When starlight enters the atmosphere, it is affected by winds in the atmosphere and areas with different temperatures and densities. This causes the light from the star to twinkle when seen from the ground.
Why is universe infinite?
To be sure the universe is infinite, we would need to measure that it is infinite. It is impossible to ever measure anything that is infinite - it would take an infinite time, for example. One way the universe could be finite would be if the universe had a small positive curvature.
What is hotter sun or lava?
Lava is indeed very hot, reaching temperatures of 2,200° F or more. But even lava can't hold a candle to the sun! At its surface (called the "photosphere"), the sun's temperature is a whopping 10,000° F! That's about five times hotter than the hottest lava on Earth.
How hot is a fire?
While weaker, red flames can still range from 525°C to 1000°C. The more faint the colour, the lower the temperature. A more vibrant red, something closer to orange, will hit the higher end of the scale measuring nearer the 1,000°C mark. Orange flames range from around 1100°C to 1200°C.
What is hotter than sun?
The hottest known star is WR 102, found in the Sagittarius constellation, which has a surface temperature of over 200,000°C (360,032°F). This is over 36 times hotter than our Sun. It's not just WR 102 that's hotter than the Sun, though, as there are plenty of stars out there that boast higher temperatures.
What existed before the Moon?
Before Earth and the Moon, there were proto-Earth and Theia (a roughly Mars-sized planet). The giant-impact model suggests that at some point in Earth's very early history, these two bodies collided.
Could any moons have life?
Life could flourish in half-frozen slush on Europa and Enceladus, within the subsurface saltwater ocean of Ganymede, underneath the methane and ethane rivers of Titan, and maybe in brines in the deepest craters of the dwarf planets Ceres and Pluto.
Could moons have life?
While the lunar surface is hostile to life as we know it, a deep lunar biosphere (or that of similar bodies) cannot yet be ruled out; deep exploration would be required for confirmation.
Can a red sun exist?
It is not only possible, it happens a lot. The color of a star depends on its temperature. Red stars are cooler on the surface compared to our Sun. Very old stars become red when they expand hugely.
How long will humans exist?
Humans will go extinct on Earth in 250 million years – but that's if we were to stop burning fossil fuels right now, a bleak new study reveals. Computer simulations suggest our planet will face a mass extinction that wipes out all mammals, University of Bristol experts report.
Will humanity survive the next 100 years?
A 2008 survey by the Future of Humanity Institute estimated a 5% probability of extinction by super-intelligence by 2100. The Global Challenges Foundation's 2016 annual report estimates an annual probability of human extinction of at least 0.05% per year (equivalent to 5% per century, on average).
Is planet 9 a star?
Planet Nine is a hypothetical ninth planet in the outer region of the Solar System. Its gravitational effects could explain the peculiar clustering of orbits for a group of extreme trans-Neptunian objects (ETNOs), bodies beyond Neptune that orbit the Sun at distances averaging more than 250 times that of the Earth.
Did our sun have a twin?
Now, a pair of researchers has offered a new take on this far-out mystery: Our sun has a long-lost twin. And the two stars spent their childhoods collecting the passing debris from interstellar space, crowding the outer reaches of the solar system. We can't see this twin.
Were there 7 suns?
A diagram lost for more than 350 years documents a spectacular sky of 1630. Around midday on 24 January 1630, seven suns seemed to blaze over Rome.
What if the sun disappeared for 5 seconds?
Some heat would filter through Earth's crust, keeping it warmish for a time. Some people could burn wood and coal for warmth, but without food we wouldn't survive long. If the sun disappears suddenly, total darkness will be observed on Earth after 8 minutes – the time it take for its light to reach us.
What if you never saw the sun?
The lack of sunlight is the cause for Seasonal Affective Disorder (seasonal depression) and depression would be one of the more noticeable signs of not getting any sunlight. Lack of vitamin D can cause memory loss, depression, and is suspected to be the cause of many illnesses.
How hot is a red sun?
Red stars are cooler than the sun, with surface temperatures of 3,500 K for a bright red star and 2,500 K for a dark red star. The hottest stars are blue, with their surface temperatures falling anywhere between 10,000 K and 50,000 K.
What if Earth had 2 moons?
Tides could be either smaller or higher and there could be more than two high tides per day. If the gravitational influence of a second moon were extreme, it could lead to phenomenally huge ocean tides (up to a kilometre high) which would also result in frequent tsunamis.
What if Jupiter disappeared?
There would be minor changes in the planets' orbits about the Sun, but very little else. However, Jupiter does a great job of shepherding and absorbing small objects in the Solar System. With Jupiter gone, the main effect on Earth would be an increase in the rate of impacts from asteroids and other space flotsam.
What if Earth had rings?
The presence of rings around the Earth would have a serious impact on the amount of sunlight that would reach the Earth by preventing some of it from reaching, for example during the summer in the Northern Hemisphere, the rings would cast shadows on the southern hemisphere (where it is winter) and this would It ...
Why is visible light important to life?
What is a Class 3 light?
Do we need visible light to see?
Can you earth a Class 2 light?
How does visible light affect us?