Scicomm
A superconducting transition-edge sensor (TES) is a device well-known for its extreme sensitivity to photons, the particles of light — so much so that they can count photons one by one. They also have very little noise, which makes their readings quite reliable. TESs are often used in single-photon detectors in
Analysis
From 'Earth Imaging Satellite NISAR Exposes NASA's Weaknesses, ISRO's Strengths', NDTV, July 26, 2025: At the end of the day, the US scientists have swallowed their pride and are sheepishly going to watch the launch of a satellite where they have invested nearly $1.
Scicomm
Physicists in Europe have reported that it’s possible to transport charged particles on a truck for four hours without disturbing them in any way. This seemingly run-of-the-mill announcement, reported in Nature on May 14, actually contains within its details the possibility of “a new era of precision antimatter spectroscopy”
Scicomm
Physics often involves hidden surprises in how matter behaves at the smallest scales. A fundamental property in physics is angular momentum, which describes how things spin or rotate, from planets all the way down to particles. Angular momentum is involved in many important effects like magnetism and quantum states that
Scicomm
Remember the periodic table from your high school classroom? The table orders elements by how the valence electrons in their atoms are arranged. However, quantum physics calculations predict that in elements with atomic number greater than 103, the electrons are arranged in new, unusual ways. This is because these electrons
Scicomm
Lasers can produce a slender beam of light of just one wavelength. For this simple feature, they are everywhere in modern technology, from the internet to medical devices and even in entertainment as holograms. However, traditional lasers have some limitations. For example, to use them in particular applications, engineers currently
Scicomm
Imagine you’ve put together a torchlight. You know exactly how each part of the device works. You know exactly how they’re all connected togetger. Yet when you put in fresh batteries and turn it on, the light flickers. You take the torchlight apart, check each component piece by
Op-eds
Right now, Shubhanshu Shukla is on his way back to Earth from the International Space Station. Am I proud he’s been the first Indian up there? I don’t know. It’s not clear. The whole thing seemed to be stage-managed. Shukla didn’t say anything surprising, nothing that
Life notes
I hadn’t checked my notifications on X.com in a while. When I did yesterday, I found Pradx had tagged me in a blog post called “a challenge of blog questions” in March. The point is to answer a short list of questions about my blogging history, then tag
Scicomm
From ’Sharks hunt via Lévy flights’, Physics World, June 11, 2010: They were menacing enough before, but how would you feel if you knew sharks were employing advanced mathematical concepts in their hunt for the kill? Well, this is the case, according to new research, which has tracked the movement
Analysis
A heatwave is like the COVID-19 virus. During the pandemic, the virus infected and killed many people. When vaccines became available, the mortality rate dropped even though the virus continued to spread. But vaccines weren’t the only way to keep people from dying. The COVID-19 virus killed more people
Scicomm
In physics, the second law of thermodynamics says that a closed system tends to become more disordered over time. This disorder is captured in an entity called entropy. Many devices, especially clocks, are affected by this law because they need to tick regularly to measure time. But every tick creates