Although we might think that we are good at seeing all kinds of colours, we humans can only see around 0.035 per cent of the entire light spectrum. Anything past red light (infrared, microwave, radio, broadcast) or violet light (ultraviolet, x-ray, gamma, cosmic) is invisible to the naked eye.
This article explains light as electromagnetic radiation. Visible light is only a part of the spectrum. Light travels in waves meaning it oscillates. The article explains these things in more detail including amplitude, wavelength, and frequency.
The discovery of a subatomic particle that can travel faster than light has shocked scientists around the world.
One of the properties of light states that the speed of light is the absolute maximum speed limit of anything in the universe. This subatomic particle, named the “neutrino”, seems to break that law, giving scientists a reason to believe that Einstein’s theory of special relativity is wrong.
There are theories that attempt to explain these results, one of which is that neutrinos are able to access some hidden dimension of space, but none have been proven.
This article talks about how a metasurface was created in order to alter lightwaves with nanoscale precision. These properties include the amplitude, phase and polarization of the wave.
This article details the achievements of a team of scientists in Florida in doing what seems to be impossible: controlling the speed and direction of light. They were able to make a ray of light speed up to 6 times the speed up of light and slow it down to half the speed of light, in addition to making it travel backwards, without using any sort of special materials. This achievement will allow for more efficient optical communication which can help alleviate congestion through the world's fibre optic networks.
University of Central Florida researchers have developed a way to control the speed of light. Researchers demonstrated they could speed a pulse of light up to 30 times the speed of light, slow it down to half the speed of light, and also make the pulse travel backward.
The researchers were able to develop the technique by using a special device known as a spatial light modulator to mix the space and time properties of light, thereby allowing them to control the velocity of the pulse of light.
Optical light is very important to identify minerals. Light is electromagnetic radiation and the electromagnetic spectrum is divided based on wavelengths. If all wavelengths are present we see white light, if there is only one wavelength that is monochromatic light and if there are no wavelengths we see dark.
This article is about measuring light properties through a quantum sensor. Researches at the University of Innsbruck found how light could be measured through a quantum sensor non-destructively. The research includes "creating interfaces that allow quantum information to be transferred from matter to light and vice versa."
Light can travel at a ridiculous speed--at almost 3.0 x 10^8 metres per second. So, in a large space like the universe, light year, the distance a ray of light can travel in one year (around 9,460,000,000,000 kilometres), became the unit of measurement. However, the universe is far larger than a light year: the closest large galaxy, Andromeda, is 2.3 million light years away. This means the images taken of the galaxy contain a journey started far before any man-recorded history: rays of light radiated from the stars, travelling in space for 2.3 millions of years before being captured in an image and presented in front of your eyes so you can see what the galaxy looks like that long ago.
This article talks about the recent discovery made by the University of Innsbruck, able to measure light non-destructively through a quantum sensor. This discovery opens up many more opportunities to explore the quantum properties of light, including things such as quantum internet. With potential like this available to us now, we can expect major projects to revamp the world in no time, hopefully making it a better place in the process.
A team from the University of Central Florida demonstrated how they were able to speed up the pulse of light to up to 30 times faster than normal, slow it down to half the speed of light, and even make it travel backward. The team used a special device called a spatial light modulator that allowed to manipulate the space and time properties of light. This is the first time that the speed of light was adjusted in the open, without using other materials where the pulse would pass through to either speed it up or slow it down. They believe that the findings of the study could advance optical telecommunications, which uses light to carry data.
This is a new invention that fixes the problem that a photo detector has (converting light into an electrical signal, which causes the light to be lost). Now, researchers have found a way to prevent this using a quantum sensor. This can be used to discover new properties of quantum light.
In Albert Einstein's famous equation , E=mc², we can see that the speed of light is used in this equation. The speed of light is multiplied to the mass of the object to find the amount of energy in the object. The speed of light is used in this equation because nothing with infinite mass can exceed the speed of light,