Sentences with phrase «reflectivity of»

This would take biometric readings by looking at the reflectivity of light coming off the skin, allowing it to detect the flow of blood under the skin and make a call on exercise intensity.

The screen is once again framed by thin black lines which give the impression that this smartphone has an edge to edge display, an illusion which is further enforced by the low reflectivity of the AMOLED display and the soft 2.5 D curves where the glass meets the metal sides.

But owing to a combination of factors, including the inherent higher reflectivity of the sapphire cover, it's all but impossible to use in direct sunlight.

Part of that is due to the inherent reflectivity of an LCD panel, but the Essential Phone also doesn't have any sort of outdoor display mode like the Galaxy S8, LG G6, U11 or Xperia XZ Premium, which pushes those phones over 550 or even 600 nits in harsh sun situations.

Apple claims the device has the lowest reflectivity of any tablet, while being 25 percent brighter than the iPad Air 2, at 500 nits — Apple is calling it the brightest tablet available.

The new iPad Pro has a Oxide TFT display for high contrast ratio, and is 47 percent less reflective than the iPad 2 — the lowest reflectivity of any tablet, Apple says.

The Verge noted that the HomePods aren't meant to be put on a soft surface either, as the tweeters fire down, so putting it on a towel will impact the reflectivity of the sound.

Two antenna lines cross the Axon 7's top and bottom, and on the sides sit a gleaming power button, volume rocker, and combination SIM / Micro SD Card tray of the same color and reflectivity of the handset's unibody.

Melting sea ice does not raise sea level, but it does create a cascade of consequences for regional temperatures, reflectivity of ocean surfaces, and creatures that depend on ice.

Because meltwater is less reflective than ice, the surface of the ice sheet is already absorbing more sunlight — previous research found that the reflectivity of the Greenland ice has dropped by 6 percent in the last decade, according to an Ohio State University release on the new research.

Cook explains that the darkening is the result of a melt - induced feedback that polar scientists have long documented: Upon melting and refreezing, ice crystals lose their spiky shape and grow larger and rounder, which can reduce the reflectivity of the snow by as much as 10 %.

Albedo is the reflectivity of the planet.

The shift to seasonal ice decreases the reflectivity of Earth's surface and allows more solar energy to be absorbed in the ice - ocean system.

The albedo or reflectivity of the ice surface is decreased by coating the surface with black particulates which don't reflect but absorb the heat from the Sun.

Although the reflectivity of water is very low at low and medium angles of incident light, it increases tremendously at high angles of incident light such as occur on the illuminated side of the Earth near the terminator (early morning, late afternoon and near the poles).

The reflectivity of a water surface is calculated using the Fresnel equations (see graph).

«These clouds account for the high reflectivity of Venus, but because they also reflect infrared back to the surface (unlike water clouds, which absorb and emit)»

«More snow means more snowmelt in [the] spring, resulting in larger melt ponds at that time,» which lowers the reflectivity of the sea ice, Feltham said.

But not the reflectivity of aerosols.

These effects are magnified by snow and ice: by reducing snow and ice cover, warming reduces the reflectivity of the ground and allows more solar energy to be absorbed, further increasing the warming; conversely for cooling.»

The albedo of the Earth System, including the reflectivity of clouds and of the surface is estimated to be 70 % 30 % by many experts.

As others have pointed out, excluding clouds, the average reflectivity of earth's surface is about 0.124 Earth is not a blackbody, most of the earth is covered by ocean, which has an emissivity between 0.92 and 0.96 - I'll use a 0.94 average.

We retrieve CO2 only over land due to the low reflectivity of water in the near - infrared spectral region used to retrieve CO2 information from the satellite spectra of reflected solar radiation.

I am still not convinced that reflectivity of water at 24 degrees would be equal to that of snow and ice at the same angle.

Yes, it seems huge compared effects of increasing CO2 Abstract: «The 340 nm LER is highly correlated with cloud and aerosol cover becauseof the low surface reflectivity of the land and oceans (typically 2 to 6RU, where 1RU = 0.01 = 1.0 %) relative to the much higher reflectivity of clouds plus aerosols (typically 10 to 90RU).

Proposals include artificially brightening clouds, increasing the reflectivity of surface - level planetary features, or depositing reflective particles in the earth's upper atmosphere.

One example: the feedback through albedo — the reflectivity of the Earth such as can be affected by snow cover.

SAM involves injecting sulfur aerosols into the stratosphere to increase the reflectivity of Earth's atmosphere.

The estimates — based on analysis of fire's impact on emissions of carbon dioxide, nitrous oxide, and methane; albedo or the reflectivity of Earth's surface; and release of aerosols and other particulates — suggest fire plays a major large role in climate than conventionally believed.

He'd been studying changes in Greenland's albedo (the scientific term for the reflectivity of ice), but hadn't focused on the role of black carbon.

For example, the dramatic decline of summer sea ice in the Arctic — a loss of ice cover roughly equal to half the area of the continental United States — exacerbates global warming by reducing the reflectivity of Earth's surface and increasing the amount of heat absorbed.

Earlier this year he and others pinpointed a change in albedo — a measure of the reflectivity of snow on the island — that suggested that melting might accelerate.

For instance, researchers still don't completely understand the role of aerosols in the atmosphere, the variable effects of clouds at different heights, and the influence of feedback mechanisms such as the changing reflectivity of the Earth's surface and the release of gases from permafrost or deep seabeds.

DMS oxidizes to sulfates which make efficient cloud condensation nuclei, increasing both the amount of cloud cover and the reflectivity of individual clouds.

This condition exists in spite of the fact that the high reflectivity of the Venusian clouds causes the planet to absorb less solar radiation than Earth.

Cloud droplets scatter visible wavelengths impartially (hence, clouds usually appear white) but very efficiently, so the reflectivity of clouds to solar radiation is typically about 50 percent and may be as high as 80 percent for thick clouds.

Trend in the reflectivity of high elevation ice in Greenland, showing the record low as of June 26, 2012.

The high reflectivity of this new planetary layer, the Lucrosphere, will radically incease our planet's albedo, and so compensate for the loss of reflective Arctic sea ice that threatens to accelerate global warming.

The high reflectivity of snow is what has kept Greenland so cold by redirecting incoming heat from the sun back out toward space.

But with several factors combining to increase temperatures in Greenland and reduce the reflectivity of the snow and ice cover, the ice sheet is becoming less efficient at reflecting that heat energy, and as a consequence melt seasons are becoming more severe.

As the earth's natural air conditioner, white sea ice moderates solar heating by increasing the reflectivity of Earth's surface and decreasing the amount of heat that would otherwise by absorbed by darker ice - free Arctic seas.

Through years of careful experimentation, we have isolated the most effective and safe material solution for increasing the reflectivity of ice.

It would have to be something that affected the net heat balance of the earth by affecting incoming radiation (solar inputs, aerosols, clouds), the reflectivity of the earth (ice caps, land use changes) or the ability of the surface to cool (greenhouse gases).

Is it not also therefore true that the polar areas of least water vapor, where a greater temperature increase from doubling of Co-2 would have the most effect, has the least percentage of both incoming S - W and outgoing L - W radiation due to the incident angle of incoming Sun light, the high reflectivity of the snow and ice, and the greatly reduced outgoing L - W radiation due to this?

Salter believes that a 4 % increase in the reflectivity of 1/3 of such clouds could counteract global warming.

Is it not also therefore true that the polar areas of least water vapor, where a greater temperature increase from doubling of Co-2 would have the most effect, has the least W / sq - m percentage of both incoming S - W and outgoing L - W radiation due to the incident angle of incoming Sun light, the high reflectivity of the snow and ice, and the greatly reduced outgoing L - W radiation due to this?

Of those that serve as cloud nuclei, some increase the reflectivity of the clouds, while others decrease it.

The difference in model vs actual radiative forcing is equal to the reduced reflectivity of the atmosphere of pre-98 and increased reflectivity of post-98.

Or we could try to increase the reflectivity of clouds by, say, spraying seawater into the atmosphere.

Roy Spencer is the driving force behind the «internal variability» hypothesis, which posits that some unknown and undefined mechanism is causing cloud cover to change, which, by changing the overall reflectivity of the Earth, is the driving force behind the current global warming.