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does light travel forever

does light travel forever插图

Until it hits something
Light does travel foreveruntil it hits something. That is,the light will keep on traveling until it interacts with something. If there is nothing for it to get absorbed,it will keep traveling.

Can we ever travel faster than light?

We all know the number one traffic rule of the universe – nothing can travel faster than the speed of light. And that happens to be 299,792.458 kilometres per second.

Can the soul travel faster than light?

Your body is just a mass vehicle. In the environment called Universe the maximum speed of that vehicle is near the speed of light. For the speed of light you need another vehicle. Without vehicle your soul will travel faster than the speed of light.

Could a light bulb be made to last forever?

Yes, it is possible that humans create a light bulb stable enough to last 100 years. But there are still additional variables to take into account. Give a light bulb to a five year old. Install a light bulb into a building where the lights are on 24/7. Place a light bulb inside a soft casing then bury it.

Does light travel forever in a vacuum?

No, in fact light only stops when it is absorbed by an electron in an atom of an object. Light in a perfect vacuum travels on at its full speed until it hits something.

How do photons travel through the atmosphere?

Light reflected from you travels through the atmosphere and goes through a process of absorption and re-emssion. In one the sense of the waves that leave your body, some of it, if you’re outside, will reach space and travelt forever. In the sense of the photons leaving your body I would imagine that they all get absorbed and re-emitted so in that sense they don’t, but copis of them due.

What is the inverse law of light?

Don’t forget the inverse square law, where the intensity of the light is proportional to the inverse of the square of the distance.

Why can we see distant galaxies?

That’s why we can see those most distant galaxies, because of the light informing us of them

How do I know if light won’t reach us?

There are two ways I know light won’t reach us, from main stream definitions. One is space expanding, and accelerating, ‘faster than light’ meaning that light won’t be able to cross that space, as it has finite ‘speed’ . The other is the ‘curtain of light’ hiding the earliest effects from a Big Bang, before rest mass particles and matter came into existence. Of the top of my head that is, there might be more effects.

What would happen if there were no objects to absorb light?

If there were no objects to absorb light, it would keep traveling forever. Light is made up of particles called photons that travel like waves. Unless they interact with other particles (objects), there is nothing to stop them.

How long has light been travelling in space?

We see exactly this in deep space! In fact, scientists have observed light that has been travelling for over 13 billion years. 13 000 000 000. To get an idea of how big the number is, that’s like comparing one second to 300 years. Or comparing the width of a human hair (1 mm divided by 10), to the distance between here and the Oregon border (620 miles). For more examples, it’s like comparing the size of an ant (~5mm, or 1/5 of a inch) to the length of the Earth’s equator (40 075 km, or 24 900 miles), or 3 cm (~1 inch) to the distance to the moon! (384 000 km, 239 000 miles).

Is light a self-perpetuating wave?

Nope ! Light is a self-perpetuating electromagnetic wave; the strength of the wave can get weaker with the distance it travels, but as long as nothing absorbs it, it will keep on propagating forever.

Does light continue on its path forever?

Ordinarily, no, light will continue on its path forever unless it runs into something.

Does light stop when it hits an object?

No, in fact light only stops when it is absorbed by an electron in an atom of an object. Light in a perfect vacuum travels on at its full speed until it hits something. That is why it is so cool that when we see really ancient images of far off "and very, very old" objects, that light has traveled from that star through the universe for sometimes billions of years and the first object it hit was our telescope detector.

Is vacuum energy a net effect?

This is a contributor to the vacuum energy, and these ‘virtual particles’ are produced all the time in a vacuum but have no real net effect in normal physics, although it does lead to some interesting implications such as the Casimir effect and Hawking radiation."