http://bentasker.i2p/posts/blog/general/726-sparkler-bombs.html
Ben Tasker 2021-06-07 14:43 (updated 2021-06-07 15:18 ) Firstly, to deal with the obvious: the term sparkler bomb is a bit of a misnomer, the burst isn't contained - there's no explosion, just a large woosh. There are, of course, ways to contain them and make a bang, but doing so is (frankly) twattish and far, far less fun (even before it goes wrong and puts you in A & E).