(Phys.org)—It's relatively simple to build a device capable of detecting wireless signals if you don't mind making one that consumes lots of power. It's not so easy to design energy-efficient devices that function as well ...
Electronics & Semiconductors
Feb 7, 2013
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0
Friction is hard to predict and control, especially since surfaces that come in contact are rarely perfectly flat. New experiments demonstrate that the amount of friction between two silicon surfaces, even at large scales, ...
General Physics
Dec 1, 2023
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93
Genetic studies of the past 20 years have extensively shown how, across human populations worldwide, the majority of genetic differences are encountered at the individual rather than at the population level. Two random humans ...
Social Sciences
Nov 18, 2022
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33
For the past two centuries, humans have relied on fossil fuels for concentrated energy; hundreds of millions of years of photosynthesis packed into a convenient, energy-dense substance. But that supply is finite, and fossil ...
Analytical Chemistry
Nov 11, 2022
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1331
Biomedicines are produced by living cells and are used to treat cancer and autoimmune diseases among other things. One challenge is that the medicines are very expensive to produce, something that limits global access. Now ...
Biochemistry
Jun 15, 2022
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59
In recent years, the energy consumption in developed countries has been rather wasteful. Nearly two-thirds of the total energy is typically discarded into the environment as "waste heat," which ends up contributing to global ...
Materials Science
Dec 9, 2020
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973
High levels of air pollution are forcing people inside to consume more electricity, subsequently causing even greater environmental problems by increasing greenhouse gas emissions.
Environment
Sep 24, 2020
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286
Adenosine triphosphate, or ATP, is the cellular energy currency that is as valuable to the human body as the dollar is to the US economy. Too high or too low levels of ATP in some cell types have been linked to a variety ...
Cell & Microbiology
Aug 28, 2020
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76
Footballers in flashy cars, City workers in Armani suits, reality TV celebrities sipping expensive champagne while sitting in hot tubs: what drives people to purchase luxury goods? New research suggests that it may be a sense ...
Social Sciences
Sep 19, 2017
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9
The Earth passed another unfortunate milestone May 23 when carbon dioxide (CO2) surpassed 400 parts per million (ppm) at the South Pole for the first time in 4 million years.
Environment
Jun 17, 2016
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