Because light moves substantially faster than sound.
The light shown by the flash travels at the speed of light, while sound waves travels slower. It is the different speeds of light and sound that causes sound to be heard after seeing the flash.
You notice the smoke before hearing the starter's gun fire because light travels faster than sound. The light from the smoke reaches your eyes almost instantly, while sound waves take longer to travel the distance from the gun to your ears, resulting in the visual cue preceding the auditory one.
if you are always exposed to the 160dB sound (gun shot, perhaps?), it will affect your hearing. I've read an article on hearing loss saying that if a sound reaches 85dB or stronger, it can cause permanent damage..
The smoke is produced slightly before the sound. Smoke is produced by the ignition of the propellant in the round. The sound is produced when the bullet passes through the sound barrier.
Someone looking to purchase a flash gun for a canon could find one at any camera and electronic shops. Best Buys, Walmart, target and Sears are all good retail stores to check for a flash gun for a canon.
little davids open there eyes when they are sent out and cause a flash to happen
You SEE things at the speed of light (186,000 miles per second) but you HEAR things at the speed of sound- about 1/5 of a mile per second. The light gets to you long before the sound.
The Flintstones - 1960 Flash Gun Freddie 3-15 is rated/received certificates of: Australia:G
Wind.
You pull the trigger . :)
BOOM!
Flash gordon