r/India_Bharat_

In the 1971 war, India lost a warship at sea. Its sonar had not been able to find the submarine that sank it.

India then tried to buy better sonar. The countries that made it would not sell.

So the Navy told one of its own officers to build it himself.

His name is Arogyaswami Paulraj.

He was born in Pollachi, a small town in Tamil Nadu. He joined the Indian Navy as a teenager and stayed for about 30 years.

The Navy spotted him early and sent him to the Indian Institute of Technology in Delhi for a master's degree. His professors told the Navy not to stop there. He finished a doctorate.

After the 1971 war he was given the sonar problem.

He had no foreign help, no foreign equipment and no permission to buy either. His team built the system from the ground up. It was called APSOH. It went into the fleet in 1983.

It was not a compromise. It is still considered one of the best sonars in the world.

He went on to set up 3 national research laboratories in India, in computing, artificial intelligence and military electronics. India gave him the Padma Bhushan.

Then he left the Navy and joined Stanford University in America as a postdoctoral researcher, starting again at the bottom.

While running wireless experiments there, he noticed something odd in his results about how signals could be separated from one another. He followed it.

What came out of it is called MIMO. In simple terms, instead of one antenna sending and one antenna receiving, you use several at both ends at once, and the signals stop fighting each other and start carrying far more data.

That is the foundation of every WiFi connection and every 4G and 5G phone on the planet.

The chairman of the Marconi Society put it plainly. Every WiFi router and 4G phone today uses MIMO technology pioneered by him.

He founded a company on it, which Intel bought. He founded another, which Broadcom bought. He holds around 80 patents.

He has the Marconi Prize, the IEEE Alexander Graham Bell Medal, the Faraday Medal, and a place in the United States National Inventors Hall of Fame.

He's still going to celebrate 14 August as Independence Day. Not the 15. Got scared so apologised.

Are you freaking serious?

Until recently, Bharat relied heavily on imported TBMs, many of which were manufactured in China. After supply disruptions and geopolitical tensions, Bharat decided to build its own advanced TBM domestically.

and our road transport minister has clearly said that we don’t have any shortage of money.. looks like the “intent” is missing ..

For the first time, Bharat has commissioned two deep geothermal wells in Puga Valley, Ladakh, paving the way for the country's first demonstration-scale geothermal power plant.

Unlike solar and wind, geothermal energy can provide 24x7 clean electricity, making it especially valuable for remote regions like Ladakh where harsh weather and difficult terrain pose unique energy challenges.

If the pilot project succeeds, it could open a new chapter in Bharat's renewable energy journey-one powered not by the sun or wind, but by the Earth's own heat.

A quiet milestone today could become a major energy breakthrough tomorrow.