Hi I was just wondering what ways you can smash glass without physically touching/breaking/throwing something at it. For example, I know that the "force" of an explosion can break glass that is a fair distance away from the actual explosion. So is there any way you could make something that would break glass from a distance of say, 2-10 metres that isn't a bomb, or is a bomb but doesn't cause the damage of a normal bomb, if that makes sense? I know it's possible with sound, but it's too impractical in this scenario. Are there any other alternatives?