Glasses that look like this are actually made of glass.
A new study by the University of Illinois at Urbana-Champaign found that the glass is made of materials that absorb light.
Researchers used a laser to shine a laser beam onto the top and bottom layers of a glass surface.
When the laser shone at the top, the material showed a pattern of light patterns that were consistent with light absorption, said lead author Matthew T. Hwang, a research associate in the UIC Institute for Materials and Energy Technology and an assistant professor of materials science and engineering.
When they shone the laser at the bottom, the pattern changed.
When both layers were lit, the patterns changed too.
“We’ve been studying this for about 10 years, and it’s been known for decades,” Hwang said.
“But nobody had been able to find a way to actually do this experiment to see how the light reflected off the glass was reflected, and the amount of light absorbed.”
Hwang and his colleagues took samples from two types of glass: glass made from ceramic, and glass made out of a transparent glass called glassblende.
“Ceramic and glass are basically the same thing, but there are subtle differences,” Hwein said.
Ceramic is a non-crystalline, porous material that can absorb light, and a glassblend of a ceramic material will reflect light.
“The way they absorb light is by bouncing it off the surface,” Hwan said.
The researchers found that, unlike ceramics, the light that bounced off the top layer of a material absorbed more light than it reflected, which indicates that the light was absorbed in the middle of the glass, where light would be reflected.
“This light absorption tells us that this material is really absorbing light from all directions, but it’s also absorbing light at different wavelengths,” Hwong said.
This difference between absorption and reflection is also known as “optical refraction,” or refraction, Hwang explained.
The results of the new study, which Hwang presented at the International Conference on Optical Optics and Quantum Optics on Thursday, were published in the journal ACS Applied Materials and Interfaces.
“It’s not a new result,” Hwa said.
Hwa and his team had originally planned to conduct experiments with a different type of glass made using a material called glassacres, which was a type of ceramic that can be used in many types of glasses.
But when they decided to use the glassacre material, they found that it absorbed much less light than ceramically made glass.
The new study suggests that the absorption of light by the glass that was used is similar to that of a reflective material, Hwan explained.
“Our results indicate that we could get a very strong reflection of light out of the material,” Hwei said.
That’s important, because light reflecting surfaces absorb and reflect light differently than materials that are not reflective.
“That is an important difference, because the reflection depends on the orientation of the light coming in,” Hwu said.
Other studies have shown that mirrors can reflect light and reflect it to the viewer.
The team was interested in studying this phenomenon because light can’t be reflected off a glass that’s not reflective, Hwa explained.
Because the material they were studying has a reflective nature, the reflections would be stronger than if the material was not reflective at all.
Hwan added that the reflective material was actually made by applying a special type of resin to a surface.
“There are some types of materials where you can apply the resin to the surface, and then there’s some materials where the resin can be applied to the material as a resin,” Hwi said.
When researchers shine a beam of light at a material, the resin acts as a lens.
The resin lens is visible when light is reflected, so it gives the light a shape that makes it appear as a curved line.
Hwi’s team wanted to see if they could use the same technique to absorb light by using a different material, and so they used a material made from glassacrees, a ceramic that is transparent.
“When you shine a light beam at the glass acres, the glass itself absorbs light, so we can actually see what the glass does, because you can see the reflection pattern,” Hwed said.
By shining light at the resin layer of the acres and then applying the resin, the team was able to measure how much light the resin absorbed.
The scientists used a spectrometer to measure the light absorbed by the resin and the light reflecting on the glass.
“These results indicate there is a direct and distinct difference in the light absorption of glassacret material versus the glass-acres material,” the researchers said.
Another type of surface that absorbs light is a mirror.
These surfaces are generally made of two layers of glass, and their light absorption depends on how much glass