- Two men accused of selling meth to undercover cop (6/22/17)
- Cape man stabbed in head, arm after strip-club incident; skull fractured, police say (6/25/17)3
- Custom cuts: Local hairstylist provides free haircuts to special-needs children (6/26/17)3
- Police: Man grabbed wheel, tried to kill driver and himself in Jackson crash (6/23/17)
- Jackson scores high in survey of residents; better streets, Aldi are high priorities (6/20/17)4
- Annual SEMO District Fair event lineup announced (6/23/17)2
- Marble Hill mayor hires city manager without board approval (6/21/17)4
- Oran town board fired officer before hiring him as police chief; city officials say they can't remember reason for firing (6/25/17)2
- Playing with fire (6/25/17)
- Two charged in theft of jewelry from Cape storage facility (6/23/17)1
Those blasts are not 'implosions'
To the editor:
For several weeks the local media have vaunted the implosion of the old Mississippi River bridge. I have yet to witness any implosions. TV news has shown the explosive collapsing of the eastern bridge spans. But by definition, no implosion has occurred.
Physicist Andrew Chugg supplies this definition of "implosion": "An implosion is the opposite of an explosion: the blast converges inwards towards a point instead of traveling outwards from it. A spherical implosion can be used to crush a sphere ... so as to uniformly reduce its radius and therefore its surface area."
Please note the two criteria for an implosion: inward convergence and reduction of surface area. In the collapsing of the bridge spans, we have witnessed no convergences nor reduction of surface areas. Instead, the spans were felled from their anchoring positions on their piers. They simply fell down. "Implosion" is derived from a Latin prefix and a Latin root. "Im" literally means in or into. "Plosion" is derived from "plaudere," which means clap. Both physics and linguistics would indicate that if the bridge were to be imploded, we would expect to see it manifest actions other than merely falling downward.
Misapplying a word in a public venue sounds very much like Humpty Dumpty announcing to Alice that he can misuse a word in any manner he wishes, though Alice protests vehemently. I'm with Alice.
MICHAEL HOGAN, Cape Girardeau