[westom]

Originally Posted by Baddad

A nearby lightning strke produces a huge transmitted EMF (electro magnetic force or field.)

If EMF was so destructive, then a nearby strike causes all mobile phones, wrist watches, calculators, TVs, and automobile radios to fry. Reality. No such damage exists.

A longwave (maybe 50 meter) antenna suffered a nearby lightning strike. Many thousands of volts appeared on the antenna lead. Then an NE-2 (neon glow lamp) was connected. Those thousands of volts became tens of volts. The milliamp (or less) of current conducted by an NE-2 literally made that energy irrelevant. Why? Because EMF so hyped in myths is made irrelevant by the simplest solutions. (Many 1960s CB radios used that same solution.)

Auto and mobile radios were connected to antennas to maximize EMF on the most sensitive transistor inside that radio. The RF amplifier. And none were damaged. Because induced fields are so trivial once we add numbers to the myth.

In one case, lightning struck the building's lightning rod. Maybe 20,000 amps entirely on that wire from lightning rod to earth ground. One meter just inside the building was an IBM PC. It did not even blink. Those massive fields from the direct lightning strike (only a meter away) did not even crash a program. All electronics must be designed to make that (and more potentially destructive static electric disharges) irrelevant.

Destructive EMF exists only when numbers are not provided. When the claim is 100% subjective. If those fields are so destructive, then where are so many destroyed radios? Damage occurs when currents pass through that device (incoming and outgoing); such as a direct strike to utility wires 100 meters down the street.