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In theory, it could mitigate the effects of global warming; but experts are wary.

Make Sunsets, a California-based startup, released weather balloons that carried sulfur particles into the stratosphere which possibly burst there, releasing the chemical, MIT Technology Review.

Continue reading “US startup wants to inject sulfur into the atmosphere to cool down the Earth” »

Lasers have been used to throw and catch extremely cold, single atoms. The technique could be used to assemble quantum computers in the future.

Ordinarily, to measure an object we must interact with it in some way. Whether it’s by a prod or a poke, an echo of sound waves, or a shower of light, it’s near impossible to look without touching.

In the world of quantum physics, there are some exceptions to this rule.

Researchers from Aalto University in Finland propose a way to ‘see’ a microwave pulse without the absorption and re-emission of any light waves. It’s an example of a special interaction-free measurement, where something is observed without being rattled by a mediating particle.

Scientists from the Large High Altitude Air Shower Observatory (LHAASO) have presented roughly 1.5 years of observational data, calculating new limits on the lifetime of heavy dark matter particles that have masses between 10⁵ and 10⁹ giga-electron volts.

The study, titled “Constraints on heavy decaying dark matter from 570 days of LHAASO observations,” was recently published in Physics Review Letters.

The gravitational model of the Milky Way shows that there is a very high density of dark matter in the galactic center, and the gamma rays produced by the decay of this dark matter will radiate from the galactic center to the surroundings for hundreds of light-years or even thousands of light-years. However, for a long time, the observation of ultra-high-energy gamma rays produced by heavy dark matter has been complicated by the presence of other background radiation.

Recently, a start-up company called Make Sunsets has begun releasing chemicals into the stratosphere as a form of geoengineering that is intended to help climate change. However, many are very hesitant about the startup and the result of what they are doing.

For perspective, geoengineering is when chemical particles are released into the stratosphere to manipulate the weather or climate. The theory is that when sulfur is released into the atmosphere that it mimics a natural process that occurs after volcanoes and that by doing this intentionally, we could ease global warming.

While it isn’t difficult to do this, it is very controversial. The reason for this is that it could potentially have dangerous side effects. Additionally, because some regions could endure worse side effects, it could cause issues across international lines.

What were the first moments of the Universe like? It’s a mystery that scientists have been trying to unravel for decades. The ALICE collaboration at CERN is a specialist in the subject: this detector (A Large Ion Collider Experiment) was designed to study quark-gluon plasma, a phase of matter that would have existed just after the Big Bang. And the team recently succeeded in recreating and characterizing this very first hypothetical material, using the Large Hadron Collider (LHC).

According to quantum mechanics, the physics theory that describes the zoo of subatomic particles, all matter can be described as both particles and waves. But is it real?

Researchers at Vienna University of Technology have discovered why sometimes spectacular micro-explosions occur and other times ultra-thin layers of material remain almost intact when charged particles are shot through them.

It may seem like magic that some materials can withstand being shot through with fast, electrically charged ions without exhibiting holes afterward. This phenomenon, which would be impossible at the macroscopic level, becomes possible at the level of individual particles. However, not all materials exhibit this behavior. In recent years, various research groups have conducted experiments with varying results.

Vienna University of Technology researchers have been able to provide a detailed explanation for why some materials are perforated while others are not. This is of particular interest in the processing of thin membranes, which are designed to have tailor-made nano-pores that can trap, hold, or allow specific atoms or molecules to pass through.

Movie plots often use holograms to give the scene a scientific or cooler essence. However, researchers have made these futuristic scenes a reality. According to reports, Scientists in China showcased a laser that can create Chinese characters out of thin air.

Although lasers often have a long-range, you can only see them when the light lands on a surface. However, dust particles made an exception. But this is entirely different and looks like something out of a sci-fi movie.

Scientists have already used lasers to create a range of optical illusions. However, it required mediums like dust and clouds to do so. But according to reports, with the new device, researchers are able to draw patterns using ultra-short laser pulses.