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Physics works! And I'm still alive!
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The latest Messages 5
2023-05-04 05:38:35
Can an MRI read your mind? Researchers develop a language decoder that translates brain activity data from functional MRI scans into a continuous stream of text. Source: Click here
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@Physics
1.6K views02:38
2023-05-03 03:39:03
A biohybrid device that combines flexible electronics with human stem cells could drive advanced neuroprosthetic limbs or improve function in paralysed limbs. Source: Click here
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@Physics
2.6K views00:39
2023-05-02 05:07:07
Radiators are heat exchangers used to transfer thermal energy from one medium to another for the purpose of cooling and heating. The majority of radiators are constructed to function in cars, buildings, and electronics.A radiator is always a source of heat to its environment, although this may be for either the purpose of heating this environment, or for cooling the fluid or coolant supplied to it, as for automotive engine cooling and HVAC dry cooling towers. Despite the name, most radiators transfer the bulk of their heat via convection instead of thermal radiation.━━━━━━━━━━━
@Physics
3.4K views02:07
2023-05-01 08:18:39
Hawking radiation is theoretical black body radiation that is theorized to be released outside a black hole's event horizon because of relativistic quantum effects. It is named after the physicist Stephen Hawking, who developed a theoretical argument for its existence in 1974. Hawking radiation is a purely kinematic effect that is generic to Lorentzian geometries containing event horizons or local apparent horizons.
Hawking radiation reduces the mass and rotational energy of black holes and is therefore also theorized to cause black hole evaporation. Because of this, black holes that do not gain mass through other means are expected to shrink and ultimately vanish. For all except the smallest black holes, this would happen extremely slowly. The radiation temperature is inversely proportional to the black hole's mass, so micro black holes are predicted to be larger emitters of radiation than larger black holes and should dissipate faster.━━━━━━━━━━━
@Physics
1.5K views05:18
2023-04-30 05:17:59
A technique that measures tumour oxygenation using an MR-linac could help identify oxygen-starved tumours and target radiotherapy more effectively. Source: Click here
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@Physics
2.6K views02:17
2023-04-29 07:38:18
Black-body radiation is the thermal electromagnetic radiation within, or surrounding, a body in thermodynamic equilibrium with its environment, emitted by a black body (an idealized opaque, non-reflective body). It has a specific, continuous spectrum of wavelengths, inversely related to intensity, that depend only on the body's temperature, which is assumed, for the sake of calculations and theory, to be uniform and constant.A perfectly insulated enclosure which is in thermal equilibrium internally contains black-body radiation, and will emit it through a hole made in its wall, provided the hole is small enough to have a negligible effect upon the equilibrium.
The thermal radiation spontaneously emitted by many ordinary objects can be approximated as black-body radiation.━━━━━━━━━━━
@Physics
1.0K views04:38
2023-04-28 07:30:29
The United Arab Emirates’ Mars probe has taken the first high-resolution images of Deimos, the smaller and less observed of Mars’ two moons. Source: Click here
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@Physics
2.2K views04:30
2023-04-27 06:44:38
High-quality membrane mirrors are flexible enough to be rolled up for transport on a spacecraft and then unfolded for use as primary mirrors in space telescopes. Source: Click here
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@Physics
2.9K views03:44
2023-04-26 06:43:52
Observations of bound photons interacting with a quantum dot could advance areas such as quantum-enhanced communication, metrology or computation. Source: Click here
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@Physics
1.5K views03:43
2023-04-25 04:41:20
A new machine-learning study suggests that the first stars in the universe emerged in clusters, rather than on their own. Source: Click here
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@Physics
2.6K views01:41
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