physics

Let's say I want to calculate the wavelength of the photon emitted when an electron of an arbitrary element (let's say Carbon) drops from $n=4$ to $n=3$ . Correct me if I'm wrong, but I think I would have to find the change in the electron's energy value $\Delta E = E_i - E_f$ , set that equal to $hc/\lambda$ and solve for the wavelength ( $\lambda$ ). How could I find $E_f$ and $E_i$ ? My textbo…

Freezing the liquid core of an optical fiber produced an extreme environment where light and sound interact more than 1,000 times more strongly than in ordinary fibers. Researchers used the effect to create optoacoustic memory, potentially paving the way for lower-energy photonic computers and advanced quantum technologies.

Freezing the liquid core of an optical fiber produced an extreme environment where light and sound interact more than 1,000 times more strongly than in ordinary fibers. Researchers used the effect to create optoacoustic memory, potentially paving the way for lower-energy photonic computers and advanced quantum technologies.

Gravitational wave astronomy has seen plenty of improvements since the original signal was captured in 2015 . Despite that, it remains an engineering challenge to actually create the detectors needed for the precise measurements required to spot gravitational waves. A new NASA Innovative Advanced Concepts (NIAC) grant is funding a concept from a team led by Paul Stankus at Brookhaven National Lab…

Understand NA, diffraction limits, and sampling. Learn how wavelength, immersion media, and pixel size shape real resolution and useful magnification. The post Mastering NA, Resolution, and Magnification first appeared on .

Quantum technology could one day make communications more secure and sensors far more sensitive. But there is a major obstacle: many quantum systems only work at extremely low temperatures, requiring large, expensive cooling equipment. MIT researchers have now developed a small magnetic device that can produce strongly linked microwave signals at room temperature. The advance […] The post Scienti…