Spectra in a sentence

Slipher and Edwin Hubble continued to collect the spectra from many diffuse nebulae, finding 29 that showed emission spectra and 33 that had the continuous spectra of star light.

It has helped Chinese scientists with a final catalog of about 10 million spectra over six years and established the world's largest databank of stellar spectra.

Accordingly, the technique of "Fourier transform spectroscopy" can be used both for measuring emission spectra (for example, the emission spectrum of a star), and absorption spectra (for example, the absorption spectrum of a liquid).

By comparing the spectra of stars such as Sirius to the Sun, they found differences in the strength and number of their absorption lines —the dark lines in a stellar spectra caused by the atmosphere's absorption of specific frequencies.

Gain media in different materials have linear spectra or wide spectra.

It is hoped that once these missions come online, their spectra can be cross-checked with these virtual planetary spectra for features that might indicate the presence of life.

More complex molecules have many bonds, and their vibrational spectra are correspondingly more complex, i.e. big molecules have many peaks in their IR spectra.

Mulliken was particularly influenced by Hund, who had been working on quantum interpretation of band spectra of diatomic molecules, the same spectra which Mulliken had investigated at Harvard.

The most prominent feature of emission and absorption spectra (known experimentally since the middle of the 19th century), was that these atomic spectra contained discrete lines.

These phenomena can aid various chemical determinations for the composition of gases lit from behind (absorption spectra) and for glowing gases (emission spectra).

Vibrational spectra are in the near infrared (about 1 - 5 µm) and spectra resulting from electronic transitions are mostly in the visible and ultraviolet regions.

Among other information, these spectra reveal essential details to study collision processes, such as the motion and distribution of stars and gas, and their chemical composition.

From these images (displayed left), the team searched for faint galaxies that are visible in the infrared but whose spectra abruptly break off at a critical wavelength known as the Lyman fracture.

He said: “It’s well documented the challenges to the High Street, so we must take every opportunity to benefit off the back of Spectra and other events.

Spectra are created by instruments that break apart light into a rainbow of wavelengths, revealing new details about a cosmic object's composition, distance, and more.

The finance and energy sectors can also greatly benefit from Spectra’s BlackPearl platform.

The researchers are scheduled to obtain additional spectra with further observations this summer.

The versatile, scalable architecture of Spectra’s BlackPearl platform allows it to handle disk, tape and hybrid storage across numerous sites.

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