Tag Archives: light

Polarization of light explained

When I first wanted to learn about the polarization of light I found it hard to understand the concept and how do polarized filters work and why is this important. For example, if you use polarized glasses while you drive, then the horizontally polarized light scattered off the road or off the lake surface will […]

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Solar Sail? Yes, you can use light to propel your ship into the space void

The physics behind light sailing is well established and it’s been already tested numerous times. Usually when you send a satellite into space you will notice that its trajectory is not exactly as calculates because the light that hits it imparts a minor, albeit noticeable over millions of miles, effect. That small nudge the light […]

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If you were to move at light speed, would you see the lights from your headlight?

Vsauce ventured into giving us a proper reply to this question. No, you won’t see any light because you would not experience time or space for that matter. Given the fact that the special relativity has some math formulas, we can conclude that at light speed c the space is infinitely contracted and the time […]

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Why is light the fastest thing ever?

Light travels at the speed of 300 000 kmph or about 180 000 mph, which is a LOT. In fact, any object with mass cannot travel at that speed as you’d need to spend a infinite amount of energy to accelerate a body to that speed. The fact that light, when stationary, is without mass […]

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How do we study the stars?

Well, by analyzing the light that comes from them. We can measure their velocity, how big they are, what type they are, what are they made of. Light or electromagnetic waves are still our best instrument that we use to learn as much as we can about the Universe. How do we know what a […]

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7 key data points light can offer in astronomy

Light isn’t just some electromagnetic radiation with a ton of cool properties. It is also a messenger that can tell us 7 things about the objects it’s coming from. Light can give us information about the temperature of an object, the velocity of that object, what is it made up of, its rotation, abundace, wat […]

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Can Legolas see that far?

In Lord of The rings, Legolas can count the exact number of horsemen five leagues (24 km) away and can also say that their leader is very tall. Minute Physics went on to investigate and see if such a thing is really possible. In short words, no. This is because of diffraction as light is […]

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SciShow Space: what is gravitational lensing

Caitlin Hoffmeister, from SciShow Space, explains us what gravitational lensing is. Gravitational lensing is a process through which light gets bent in its path if it goes past a massive object like a star or like a galaxy. An object behind the star of galaxy might be seen even though you do not have direct […]

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Light does not experience time and space

Fraser Cain, from Universe Today, explains a couple of interesting things related to light, the visible spectrum of electromagnetic waves that we experience as colors and brightness. Light, because it travels at speed c, the light speed, and because there is no possible limit over that, does not experience time and space at all. If […]

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Your vision is blurry? Use a tiny hole and you’re back on track!

Minute Physics does what he does best: entertain our brains with the best knowledge there is to have. This time we learn about something practical: what do to when your vision is blurry use tiny holes created by your fingers to see the text or image you wanted. This way the small hole allows you […]

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