How Did Optics Change So Much From Special Relativity?

In the older ages, even before someone like Einstein would special relativity and all I'm assuming the world of optics or anything really would be quite, quite different. So here we are, you have stayed on these extra two years and you've now got into or kind of like physics a little bit more. And you've now researched at the TIFR, which to our listeners, the Tata Institute for Fundamental Research in Mumbai, India. And now you're also at the National Physical Laboratory in New Delhi. That's very cool. Yeah, sorry, so continue.