Sentences with phrase «of radiation measurements»

But today, space weather scientists are reaping such a windfall, as the Los Alamos National Laboratory in New Mexico has released 16 years of radiation measurements recorded by GPS satellites.

Not exact matches

In fact, the National Council on Radiation Protection and Measurements reported in 2009 that air crews have, on average, the highest yearly dose of radiation out of all radiation - exposed workers in the US.

The WEIGHTRAC 31 is a radiation - based sensor for precise flow measurement of bulk solids.

In 2000, the observation moved beyond a reasonable doubt, thanks to measurements of microwave radiation that rippled out from the original Big Bang.

The UV index is an international standard measurement of how strong the ultraviolet (UV) radiation from the sun is at a particular place on a particular day.

In his research, Robin Ramstad has combined and compared measurements of the ion escape under varying solar wind conditions and levels of ionizing solar radiation, so - called extreme ultraviolet (EUV) 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.

APRIL 1960 RADIATION — «With the new measurement of the mean lethal dose for reproductive function of mammalian cells, it is now possible to explain the relatively low mean lethal dose of 400 to 500 roentgens for the entire body.

In 1925, three decades after Röntgen's discovery and after the loss of possibly hundreds of lives to radiation sickness, the National Council on Radiation Protection and Measurements was formed to establish a maximum exposure for X-rays.

RADIATION DETECTION EQUIPMENT Prove that you really achieved fusion by using a bubble dosimeter, which provides instant visual verification and measurement of neutrons produced by fusion reactions.

The researchers are improving other measurements that are not directly related to radiation but affect the detection of explosives.

There is no good clinical measurement of the blocking of UVA radiation, but it is important that sunscreen block both UVA and UVB.

Precise measurements of zircon's dismal durability may point the way to better radiation - proof containers

The papers in a special issue of the journal Space Weather document and quantify measurements made since 2009 by the Cosmic Ray Telescope for the Effects of Radiation (CRaTER) radiation detector.

FIFTY years ago, on 20 May 1964, Arno Penzias and Robert Wilson of the Bell Telephone Laboratories in Holmdel, New Jersey, recorded their first astronomical measurements of microwave radiation from the supernova remnant Cassiopeia A.

Snow, humidity, and solar radiation measurements are too sparse, for example, and few observations of soil moisture or groundwater stocks exist.

«Precise measurements of cosmic microwave radiation reveal minute differences in temperature.

Although many say the report is well done, the exercise largely depended on modeling of radiation doses rather than on direct measurements of population exposures, and the data were often sub-optimal.

This calculation method enabled us to more accurately perform theoretical prediction of IMFP compared to the experimental value, which was obtained by applying spectrometry (extended X ‐ ray absorption fine structure spectrometry) to low - speed electrons of Copper and molybdenum at the high - brilliant synchrotron radiation facility, and to explain the relationship between energy measurement and the types of materials.

From a hardware perspective, the Van Allen Probes» most significant challenge was to operate and perform measurements in the severe charged particle environment of the radiation belts, a region of space most spacecraft avoid.

One instrument, the Relativistic Proton Spectrometer (RPS), has been providing previously unavailable particle measurements of high accuracy within the heart of the inner radiation belts.

Outfitted with specialised instruments, the buoy functions as an unmanned research platform for continuous measurements of solar radiation absorption and other critical properties of Arctic snow and ice.

A combination of airborne measurements and space weather data from satellites may allow the radiation «clouds» to be tracked.

«They take the very tiny radiation and multiply it by a large population,» says John Boice Jr., director of the National Council on Radiation Protection and Measurements.

Exquisite measurements of the radiation left over from the big bang led us to believe that we could work out the curvature of the universe to within a few per cent.

The newly released measurements constitute a nearly continuous global record of the variability in this radiation belt for the past 16 years, including how it responds to solar storms.

Measurements of radiation reaching the shielded interior of the spacecraft that carried Curiosity to Mars indicate that an astronaut on a yearlong round - trip would be exposed to around two - thirds of...

All the characteristics mentioned before turn this device into an instrument of electromagnetic fields measurements for any person who wish to control the radiation levels.

Data collected with the Hubble Space Telescope is helping astronomers map dark matter in space along with X-ray pictures of colliding galaxies, measurements of cosmic background radiation, and analysis of the way stars on the ends of galactic arms rotate.

The new approach involves using a radiation detector to take multiple periodic measurements of an air sample for at least two hours.

«New measurements to guide radiation therapy: Data provide insights into effects of ionizing radiation on living cells.»

In the study, long - term historical meteorological data were combined with relatively short measurements of air pollution particles in China in an innovative way to clarify interactions among the solar radiation, surface wind and air pollution.

«The radiation dose rates from measurements obtained over the last four years exceeded trends from previous solar cycles by at least 30 percent, showing that the radiation environment is getting far more intense,» said Nathan Schwadron, professor of physics and lead author of the study.

Human skin emits infrared radiation almost like a perfect black body, and IRT is thus well suited for the measurement of skin temperature.

To find out whether the test sites are once again safe for humans, researchers took measurements of damaging gamma radiation on six affected islands, one unaffected island, and New York City's Central Park.

With the help of EDMR, electrically detected magnetic resonance, an ultrasensitive method of measurement, they were able to determine the local defects» structure by detecting their magnetic fingerprint in the photo current of the solar cell under a magnetic field and microwave radiation.

The Castle Bravo blast contaminated the Japanese fishing vessel Lucky Dragon No. 5, with its 23 crewmen exposed to about 260 rads — a measurement of radiation absorbed by human tissue.

But in 1968, rocket measurements found high amounts of shorter wavelength radiation that clashed with a thermal spectrum and threatened the big bang hypothesis.

Researchers from the University of New Hampshire have captured unique measurements of the Van Allen radiation belts, which circle Earth, during an extremely rare solar wind event.

An accurate measurement of the EBL is as fundamental to cosmology as measuring the heat radiation left over from the Big Bang (the cosmic microwave background) at radio wavelengths.

During this interval is when the researchers recorded measurements of the Van Allen radiations belts, and found that the outer belt was not as calm as expected.

«This is the first time detailed measurements of Earth's radiation belts have ever been recorded during such rare conditions,» said Harlan Spence, director of EOS at UNH and a co-author of the study.

The discrepancy — the universe is now expanding 9 percent faster than expected — means either that measurements of the cosmic microwave background radiation are wrong, or that some unknown physical phenomenon is speeding up the expansion of space, the astronomers say.

This is from the journal Science: Measurements of Energetic Particle Radiation in Transit to Mars on the Mars Science Laboratory «These data provide insights into the radiation hazards that would be associated with a human mission to Mars.

A factory - new Stevenson standard screen still allows solar radiation impact on the temperature measurement of more than one degree.

«If you really believe our number — and we have shed blood, sweat and tears to get our measurement right and to accurately understand the uncertainties — then it leads to the conclusion that there is a problem with predictions based on measurements of the cosmic microwave background radiation, the leftover glow from the Big Bang,» said Alex Filippenko, a UC Berkeley professor of astronomy and co-author of a paper announcing the discovery.

There appears to be a misunderstanding concerning the difference between the term «solar constant» (Measurement of radiation that travels through space) and the term «solar magnetic field» (A magnetic field is a condition of space.)

«We have flown radiation sensors onboard 264 research flights at altitudes as high as 17.3 km (56,700 ft) from 2013 to 2017,» says Kent Tobiska, lead author of the paper and PI of the NASA - supported program Automated Radiation Measurements for Aerospace Safety (ARMAS).

The micrometre is a common unit of measurement for wavelengths of infrared radiation as well as sizes of biological cells and bacteria, [1] and for grading wool by the diameter of the fibres.

Painstaking measurements of the cosmic microwave background — the omnipresent radiation that is the afterglow of the Big Bang — tells us that a sixth of all matter in our galaxy is ordinary, while the rest is dark matter.