Sentences with phrase «require ultraviolet»

Now, the required ultraviolet light permeates the universe but usually the resulting emission is very, very faint.

Not exact matches

The new guidelines will require sun protection formula labeling to have proven effectiveness against ultraviolet rays such as UVA and UVB to claim protection against skin cancers.

It is recommended that you expose your infant to sunlight because ultraviolet rays undergo a reaction with bilirubin and transform it into a form not requiring expulsion through the liver.

According to Mather and other leading astronomers now working on a report to be released this summer by the Association of Universities for Research in Astronomy (AURA), that quest and others require an even bigger space telescope that would observe, as Hubble does, at optical, ultraviolet and near - infrared wavelengths.

It requires the special conditions found deep within frigid molecular clouds, where dust shields against destructive ultraviolet light and aids chemical reactions.

But in standard solar cell materials this requires that incoming photons have at least 5 electron volts worth of energy, which corresponds to photons of deep ultraviolet light (UV).

They can also be used for biological labeling because of their low toxicity, chemical stability, and intense luminescence when excited by near - IR radiation, which can penetrate tissue much better than higher energy radiation such as ultraviolet, as is often required with quantum dot labels.

The findings described by Ellis and his colleagues in a telephone press conference organized by NASA this afternoon suggest that these first galaxies provided the ultraviolet radiation required to reionize the universe.

A warm, wet Mars requires a dense atmosphere that filters out the ultraviolet light making the unique isotope shifts disappear.

The digital copy provided here is of the UltraViolet variety, which means no DVD - ROM drive or disc is required.

Lifegard Aquatics has the Pro-MAX Ultraviolet Sterilizer, which features a patent - pending, flow - through design that use less restrictive angled inlet and outlet ports and requires less plumbing.

In other advanced techniques, instead of chemical biocides to kill bacteria, some systems now employ ultraviolet light, and mobile units now allow crews to treat and reuse water, reducing the amount of freshwater required in fracking.

Again, Vudu and digital stores like Best Buy's CinemaNow (s BBY) are soon expected to offer their own UltraViolet - enabled products, but in the meantime requiring a DVD or Blu - ray purchase to gain digital access seems a bit counterintuitive.