User talk:Om kumar mishra

September 2019
Hello, I'm DVdm. I noticed that in this edit to Photon, you removed content without adequately explaining why. In the future, it would be helpful to others if you described your changes to Wikipedia with an edit summary. If this was a mistake, don't worry, the removed content has been restored. If you think I made a mistake, or if you have any questions, you can leave me a message on my talk page. Thank you. DVdm (talk) 17:43, 23 September 2019 (UTC)

mass of photon
can you prove photon contain mass can you understand why a particle contain mass?According to plank light particle contain mass but that is not the correct statement that's why i was deleted that your mass ...thank you mr. dvdt Om kumar mishra (talk) 18:59, 15 October 2019 (UTC)