Channel address:
Categories:
Facts
Language: English
Subscribers:
36.66K
Description from channel
Physics works! And I'm still alive!
Ratings & Reviews
Reviews can be left only by registered users. All reviews are moderated by admins.
5 stars
0
4 stars
0
3 stars
2
2 stars
0
1 stars
0
The latest Messages 16
2023-01-13 05:36:15
A sheet of carbon quantum dots that improves the quality of Cherenkov images could enable real-time radiotherapy verification using a less expensive image acquisition process. Source: Click here
━━━━━━━━━━━
@Physics | @Education
1.3K views02:36
2023-01-12 05:49:42
AI CREATES HIGH-RESOLUTION BRAIN IMAGES FROM LOW-FIELD STRENGTH MR SCANS
A machine learning algorithm converts low-resolution brain scans from a portable MR scanner into high-resolution synthetic images. Source: Click here
━━━━━━━━━━━
@Physics | @Education
646 views02:49
2023-01-11 05:16:14
UK'S FIRST SATELLITE LAUNCH FAILS TO MAKE IT INTO ORBIT
The UK attempted its first orbital space launch from UK soil on Monday evening, making it the privately-owned Virgin Orbit's first international launch. However, it failed when a reported "anomaly" early Tuesday prevented the rocket from reaching orbit.
The repurposed Virgin Atlantic Boeing 747 aircraft, named "Cosmic Girl" took off from Cornwall in southwestern England at around 10:15 pm local time (2215 GMT) and released the rocket around an hour into flight over the Atlantic Ocean, toward the south of Ireland.
However, Virgin Orbit said it appeared to have an "anomaly" in a satellite launch, saying it had prevented the rocket from reaching orbit. "We are evaluating the information," it said. Source: Click here
━━━━━━━━━━━
@Physics | @Education
975 views02:16
2023-01-10 05:35:10
Eddy currents (also called Foucault's currents) are loops of electrical current induced within conductors by a changing magnetic field in the conductor according to Faraday's law of induction or by the relative motion of a conductor in a magnetic field. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field. They can be induced within nearby stationary conductors by a time-varying magnetic field created by an AC electromagnet or transformer, for example, or by relative motion between a magnet and a nearby conductor. The magnitude of the current in a given loop is proportional to the strength of the magnetic field, the area of the loop, and the rate of change of flux, and inversely proportional to the resistivity of the material. When graphed, these circular currents within a piece of metal look vaguely like eddies or whirlpools in a liquid.━━━━━━━━━━━
@Physics | @Education
247 views02:35
2023-01-09 08:05:23
Materials trapped within tiny pores of diamond retain their high-pressure properties even after being removed from high-pressure chambers, making them easier to study and opening the door to applications. Source: Click here
━━━━━━━━━━━
@Physics | @Education
1.4K views05:05
2023-01-08 06:57:41
Phason is a quasiparticle existing in quasicrystals due to their specific, quasiperiodic lattice structure. Similar to phonon, phason is associated with atomic motion. However, whereas phonons are related to translation of atoms, phasons are associated with atomic rearrangements. As a result of these rearrangements, waves, describing the position of atoms in crystal, change phase, thus the term "phason".━━━━━━━━━━━
@Physics | @Education
2.6K views03:57
2023-01-07 05:18:27
Scanning probe microscopy (SPM) is a branch of microscopy that forms images of surfaces using a physical probe that scans the specimen. SPM was founded in 1981, with the invention of the scanning tunneling microscope, an instrument for imaging surfaces at the atomic level. The first successful scanning tunneling microscope experiment was done by Gerd Binnig and Heinrich Rohrer. The key to their success was using a feedback loop to regulate the gap distance between the sample and the probe.
Many scanning probe microscopes can image several interactions simultaneously. The manner of using these interactions to obtain an image is generally called a mode.
The resolution varies somewhat from technique to technique, but some probe techniques reach a rather impressive atomic resolution. This is due largely because piezoelectric actuators can execute motions with a precision and accuracy at the atomic level or better on electronic command. This family of techniques can be called "piezoelectric techniques". The other common denominator is that the data are typically obtained as a two-dimensional grid of data points, visualized in false color as a computer image.━━━━━━━━━━━
@Physics | @Education
1.6K views02:18
2023-01-06 08:44:26
Piezoelectricity is the electric charge that accumulates in certain solid materials—such as crystals, certain ceramics, and biological matter such as bone, DNA, and various proteins—in response to applied mechanical stress. The word piezoelectricity means electricity resulting from pressure and latent heat. It is derived from the Greek word πιέζειν; piezein, which means to squeeze or press, and ἤλεκτρον ēlektron, which means amber, an ancient source of electric charge.The piezoelectric effect results from the linear electromechanical interaction between the mechanical and electrical states in crystalline materials with no inversion symmetry. The piezoelectric effect is a reversible process: materials exhibiting the piezoelectric effect also exhibit the reverse piezoelectric effect, the internal generation of a mechanical strain resulting from an applied electrical field. For example, lead zirconate titanate crystals will generate measurable piezoelectricity when their static structure is deformed by about 0.1% of the original dimension. Conversely, those same crystals will change about 0.1% of their static dimension when an external electric field is applied. The inverse piezoelectric effect is used in the production of ultrasound waves.━━━━━━━━━━━
@Physics | @Education
930 views05:44
2023-01-05 05:03:17
Heating the tumour can enhance the effectiveness of radiation therapy - and it works best with high temperatures and short time intervals between heating and irradiation. Source: Click here
━━━━━━━━━━━
@Physics | @Education
1.5K views02:03
2023-01-04 05:49:25
Quantum sensors based on microscopic flaws in the crystalline structure of diamond can work at pressures as high as 140 gigapascals, according to research by physicists in Beijing. Source: Click here
━━━━━━━━━━━
@Physics | @Education
1.0K views02:49
P
