In a lab on the first floor of the Thomas J. Watson, Sr., Laboratories of Applied Physics on Caltech’s campus, Bellan built a vacuum chamber with twin electrodes inside. To simulate the phenomenon, he charged a capacitor with enough energy to run the City of Pasadena for a few microseconds, then discharged it through the electrodes to create a miniature solar loop.
A simulated corona loop in the Bellan Lab. Credit: Caltech
Caltech researchers simulated solar flares, discovering that their structures resemble intertwined ropes. When these 'ropes' overload, they break and emit energy bursts, shedding light on the behavior of real solar flares. Simulating solar flares on a scale the size of a banana, researchers at the
When thinking of animals that live in the most extreme environments on Earth most of us probably don't think of the snailfish. Its name may not hint at extraordinary physical capabilities but the snailfish has broken the record for living at the deepest ocean depths known to humanity.
Excitons [pronounced exit-tawn].are a key part of many technologies, including solar panels, photodetectors and sensors, as well as light-emitting diodes found in televisions and digital display screens. In most cases, the exciton pairs are bound by electrical, or electrostatic, forces, also known as Coulomb interactions. Now, in a new study in Nature Physics, Caltech researchers report detecting excitons that are not bound via Coulomb forces but rather by magnetism.
space-based harvesters founded on the technology demonstrated by MAPLE could one day provide access to eight times as much solar energy on average as their terrestrial counterparts.
That harvested energy could then be dispatched to any place on Earth, including areas devastated by war or natural disaster, or regions with poor energy infrastructure, explains nanophotonic and solar-energy expert Harry Atwater, who is also one of SSPP’s principal investigators. “You could imagine in places like that, where you want to bring power to a large city, you could immediately do that without building a large power grid,” Atwater says. “The thing that’s really transformative about space solar power is that, unlike solar power on Earth, it has potential to eliminate the need for storage. You get power continuously, 24 hours a day, and you don’t have to come up with day-to-night storage, like in the form of batteries, or season-to-season storage.”
Caltech researchers hope to harness the sun’s energy and power the planet from 300 miles above. by Ker Than On a cool, clear evening in May 2023, Caltech electrical engineer Ali Hajimiri and four members of his lab gathered on the roof of the Gordon and Betty Moore Laboratory of Engineering to awa
The new findings appear in a paper published in Nature Astronomy on September 28. Galaxies in our universe condense out of swirling clouds of gas. That gas then further condenses into stars that light up the galaxies, making them visible to telescopes in a range of wavelengths of light. Astronomers think that cold, dark filaments in deep space snake their way to the galaxies, supplying them with gas, which is fuel for making more stars.
Like rivers feeding oceans, streams of gas nourish galaxies throughout the cosmos. But these streams, which make up a part of the so-called cosmic web.
This detailed imaging of the web, will provide astronomers with missing information they need to understand the details of how galaxies form and evolve. It can also help astronomers map the distribution of dark matter in our universe (dark matter makes up about 85 percent of all matter in the universe, but scientists still don't know what it is made of ) .
In a study published in Nature Astronomy, astronomers from New Jersey Institute of Technology's Center for Solar-Terrestrial Research (NJIT-CSTR) have detailed radio observations of an extraordinary aurora-like display -- occurring 40,000 km above a relatively dark and cold patch on the Sun, known as a sunspot.
the magnetic activities of other stars, could have implications for astrophysicists to rethink their current models of stellar magnetic activity.