All Stories by Tejasri Gururaj
- Computing
Finally! How to get a truly random number — and prove it
Researchers used two quantum devices and a math trick to ensure that newly generated “random” numbers are truly unpredictable.
- Tech
Explainer: What is bioprinting?
Machines can now print tissues, layer by layer, using “inks” made of living cells. This technology brings lab-grown organs closer to reality.
- Physics
Could a Star Wars lightsaber work?
The main problem with real-world lightsabers is that they would pass through each other. This means no intergalactic duels between Jedis and Siths.
- Physics
Energy may seem to disappear, but there’s a law against that
When a ball rolls to stop or a phone battery dies, it’s energy didn't vanish — it just morphed to another form. Energy is always conserved.
- Physics
How polarized and UV-blocking sunglasses protect our eyes
Their filters can cut glare to help us see more clearly. The best ones also filter out the sun’s UV rays — even on cloudy days — to limit eye damage.
