Ah, sorry - not
criticising, just reminding :) There was an article on HN recently on how important it is to follow this, and how life saving it can be.
If there is a flash and you hear no sound, it doesn’t mean it’s safe either - sound travels 300m/s, so if there was an explosion 2.5miles away, you would only see bright visuals on the sky, no sound, for the first 10-13sec, and then the shockwave would hit...
If there is a flash and you hear no sound, it doesn’t mean it’s safe either - sound travels 300m/s, so if there was an explosion 2.5miles away, you would only see bright visuals on the sky, no sound, for the first 10-13sec, and then the shockwave would hit...