Sentences with phrase «particular wavelength»

A spectrophotometer allows for the measurements of concentration of multiple ions, compounds and large molecules based on the selective absorption of particular wavelengths of light.

Since different elements and compounds absorb light at characteristic wavelengths, astronomers can determine what chemicals make up a planet's atmosphere by measuring the relative amounts of light that come in at particular wavelengths.

In their proof - of - principle experiment, the researchers used germanium antimony telluride (GST)-- the kind of phase - change material found in CDs and DVDs — to make an improved switchable metasurface that can block or transmit particular wavelengths of light at the command of light pulses.

In the new work the team used filters to sample particular wavelengths of light, and hence specific epochs in the history of the Universe.

This involves determining the composition of a planetary atmosphere by measuring its spectra, the distinctive radiation that gases absorb at their own particular wavelengths.

The gratings act as mirrors, reflecting SAWs of particular wavelengths back and forth so that they resonate in the gap.

That's because Mercury's brightness at one particular wavelength suggests that there's less than 3 % iron in its surface rocks.

Light rays that reflect off of the top and bottom of the film combine to amplify particular wavelengths, an effect known as constructive interference.

However, The spectral absorption of particular wavelength increases, not linearly, but with the log of the gas concentration.

«Greenhouse gases which are present in the atmosphere absorb and re-emit particular wavelengths of radiation, under particular conditions.

But the material of the condom may be blocking the certain particular wavelengths of IR radiation that is absorbed by CO2.

The remaining electrons are often excited to higher energy levels, and when they drop back into their original state, they emit a particle of light in a particular wavelength.

Now, new observations of a particular wavelength of infrared light from that galaxy betrays the presence of oxygen atoms that have two electrons missing (in the smaller region depicted in green), researchers report online today in Science.

Because physicists know the precise amount of energy needed to create an ion like iron - XII, they can tell how hot different parts of the corona are by looking at the particular wavelengths of light the ions emit.

To detect uranium and thorium, Frebel could measure the strength of their absorption lines in a spectrum — in other words, calculate how much light each element absorbs at a particular wavelength.

That change caused the gas to absorb light of a particular wavelength, about 21 centimeters, from the cosmic microwave background — the glow left over from around 380,000 years after the Big Bang (SN: 3/21/15, p. 7).

They've developed a tiny device in which the index of refraction for visible light is zero — so that light waves of a particular wavelength move infinitely fast.

The amount of light shining out at a particular wavelength depends on whether the electron beam enters at a point where there should be a dark or a bright spot for that wavelength.

The details of how each artificial material works, and the kinds of engineered elements it requires, vary with the particular wavelength being manipulated.

A beam tightly focused by a telescope could greatly outshine a planet's host star at a particular wavelength, Townes realized, popping out as clearly as a red laser pointer aimed at someone from across a stadium flooded with white lights.

Currently, wineries detect the so - called browning of bubbly by measuring its «absorbance,» or its absorption of light at a particular wavelength.

Displayed on screen, the data looked like blips on a heart monitor; each wiggle indicated that some molecule in the nebula had emitted light of a particular wavelength.

«If you need quantum dots to produce a particular wavelength of light, you need to finely tune the size of the dots,» Hwang says.

Also, light detectors can be created, with a selective sensitivity to one particular wavelength.

Sleep scientists have found that when specific light receptors in our eyes are exposed to a particular wavelength of blue light, we feel more alert because the brain suppresses melatonin, a key hormone in regulating sleep.

Photoactivated localization microscopy incorporates into a sample special fluorescent proteins that can be toggled between on and off states when hit with a particular wavelength of light.

After decades of effort, physicists have probed the inner working of atoms of antihydrogen — the antimatter version of hydrogen — by measuring for the first time a particular wavelength of light that they absorb.

After decades of effort, physicists have probed the inner workings of atoms of antihydrogen — the antimatter version of hydrogen — by measuring for the first time a particular wavelength of light that they absorb.

In addition to inorganic fillers they can also contain photoactive organic resins which react to light of a particular wavelength and readily solidify.

The dyes converge onto the diseased cells, and when doctors shine a light of a particular wavelength onto the cancerous area, the dye glows.

The traditional technique for weighing them takes advantage of the fact that glowing hydrogen atoms in the disk emit visible light at a particular wavelength.

The next step was to examine the plants» photoreceptors, molecules that detect light of particular wavelengths.

The possibility of such cells has been debated at least since the 1950s, when researchers found single neurons in the visual cortex of cats and other animals that respond to simple stimuli, such as lines oriented at a certain angle or moving in a specific direction, or light of a particular wavelength.

Each photopigment is sensitive to light of a particular wavelength, and the primate visual system detects colors by comparing the relative activity of cells in the retina that bear each of the three photopigments.

«Depending on the exact size and spacing of the holes, a particular wavelength of light reflects off the edge of the cavity and gets trapped inside,» says Gopinath, the lead author of the study.

Because the LEDs emit a particular wavelength that can penetrate tissue, the cells could actually be triggered by an external light source — an LED bracelet, for instance.

To characterize the chemical contents of COSMOS - 1908, Sanders analyzed a particular wavelength in the MOSFIRE spectrum of this galaxy that is sensitive to the amount of oxygen.

«Such electronic devices have a special band or a particular wavelength over which the spectra changes.»

In this regard, Maddin & Johnson have lucked into a cast that is for the most part on his particular wavelength, and are able to properly sell the oddball material.

A laser of a particular wavelength is then used to excite the cells and cause cell death.

The so - called «Venus Patrol Orientation Program» was the first event where Venus Patrol bared its face to the wider public, and included the release of the «Venus Patrol Orientation Manual», a print zine produced with the help of Oscar Barda and Théo Kuperholc that attempted to tune audiences toward Venus Patrol's particular wavelength & perspective on videogame culture.

I think the detector for this instrument was HgCdTe — a ternary semiconductor that can be tailored to absorb a particular wavelength range by varying the amounts of Hg and Cd.

As the radiation in that particular wavelength band is used up, the amount left for absorption by more of the gas is reduced.

Abstract: «Persistent episodes of extreme weather in the Northern Hemisphere summer have been shown to be associated with the presence of high - amplitude quasi-stationary atmospheric Rossby waves within a particular wavelength range (zonal wavenumber 6 — 8).

What determines the level at which radiation of a particular wavelength is emitted to space is the optical density at the emitting level, which means the density of greenhouse gases which absorb and emit at that wavelength (see 152 for details).