Sentences with phrase «background radiation»

That is cosmic background radiation caused by then early universe expanding and cooling.

The next most important observational evidence was the discovery of cosmic microwave background radiation in 1964.

It's possible that the reduced amount of background radiation in the solar neighborhood could have been a factor in the emergence of humans, he adds.

The biggest increase in background radiation levels world wide was during the peak of atmospheric weapons testing during the 1960s raising the level by about 5 %.

They measured background radiation levels at each site, and took feather and blood samples before releasing the birds.

These high - energy rays are also easily distinguished from normal background radiation, cutting down on false positives.

They found that it was thicker in places with higher background radiation.

Thus, those of us who see dread as robust do not think it will be particularly productive to teach about background radiation.

One worry was that it would be exposed to more background radiation than sperm freshly created in the body.

Some researchers believe even unavoidable background radiation can be a factor in causing cancer.

What we are here to do is discover how well the mine blocks unwanted background radiation.

Such experiments are extremely difficult because the nuclear reactions occur at a tiny rate and their signal is overwhelmed by the environmental background radiation.

Problems with the theory became apparent in the 1960s, and soon the discovery of the cosmic microwave background radiation killed the steady - state theory.

During the 1980's, very few researchers believed that it would be possible to detect variations in the cosmic background radiation due to its incredibly old age of 14 billion years.

The remaining material is equivalent to background radiation within 300 years.

This is all a bit rich from somebody who claimed falsely that nuclear power had doubled the level of background radiation.

Red shift, the cosmic microwave background radiation... we've had confirmation of the big bang before.

The age of the universe is based on red shift and cosmic background radiation.

The measured levels range from two to 1000 times normal background radiation — and residents, officials, and scientists wonder what that may mean for public health.

A statistical analysis of the weight loss of each leaf litter sample after those nine months showed that higher background radiation was associated with less weight loss.

Other bubble universes might be detected in the subtle temperature variations of the cosmic microwave background radiation left over from the big bang of our own universe.

Meanwhile, Central Park itself clocked in at 100 millirem per year, probably because of background radiation from granite found in the park.

Irony isn't new in literature (in fact it's as omnipresent as background radiation, the problem these days being how to escape it) but for John McTiernan, directing a script by Shane Black and David Arnott, it's still a new toy.

Ultraviolet light from early, blueish stars (illustrated) interacted with hydrogen gas, causing it to absorb background radiation, and creating a signature scientists have now detected.

Reactor neutrino detection at HFIR necessitates a detailed understanding of background radiation fields.

The experimenters need to establish that the detector is recording dark matter — not just background radiation.

Beneath the attention - grabbing headline, however, the claim is given statistical perspective: «a child's exposure in one day would be less than one ten - thousandth of what they would receive from naturally occurring background radiation in a day».

The discovery provides new and exciting information that could better our understanding of some astrophysics, including how certain galaxies obtain their shapes [4]; how intergalactic space becomes enriched with heavy elements [5]; and even from where unexplained cosmic infrared background radiation may arise [6].

The results revealed that with increasing background radiation, the birds» body condition and glutathione levels increased and oxidative stress and DNA damage decreased.

New observations of the cosmic microwave background radiation show that the early universe resounded with harmonious oscillations

In contrast, there was almost no change in so - called background radiation, which naturally emanates from soil, rocks and other environmental substances.

«The theorists know of no way such a monster [the Great Wall] could have condensed in the time available since the Big Bang, especially considering that the 2.7 K background radiation reveals a universe that was very homogeneous in the beginning.»

Their discovery of the cosmic microwave background radiation won them the Nobel Prize because the remnant heat showed that the universe must have begun with a violent explosion.

Many «discoveries» of background radiation evaporated as data became more precise, and the ones that endured faced a hard slog to prove themselves.

Researchers sifting through extragalactic radio emissions may have found a secondary background radiation

«Measurements of the extragalactic background radiation are always hard to get, because this signal is very faint and, as a result, its detection is strongly dependent on how well one can remove the sources of contamination,» says Angelica De Oliveira - Costa, an expert on cosmic background observations at the Massachusetts Institute of Technology.

The initial fireball expands and cools, with the ripples of the membrane leading to the small temperature fluctuations in microwave background radiation observed in our universe.

The motion and clustering of galaxies tells us how much matter is abroad in the universe, while the cosmic microwave background radiation emitted 380,000 years after the...

This visualisation of eddies in cosmic background radiation gives a glimpse into the moments after the big bang