cbrn hazard marker for a chemical hazard
Nuclear Weapon Detonations
In a pre-mechanical and pre-electronic world, communication was by land and sea couriers. It therefore established river and sea transport for those cities near water, and for the others, post-houses which held relays of horses for couriers to use carrying messages. Of course these transportation routes also carried commercial and military traffic.
On May 24, 1844, which two cities were the first to communicate via telegraph
In 1844, the first two cities to communicate through the telegraph were Washington D.C. and Baltimore. Samuel Morse, the inventor of the telegraph, sent this first message.
The Inca built stone roads which allowed runners to carry verbal messages. The runners worked in relay teams stationed along the roads. One runner told the message to the next. Messages could travel 150 miles a day along these stone roads. This system of communication was important to the Inca because their empire spread out over thousands of mile.
nuclear attacks
nuclear attacks
Nuclear Weapon Detonations
nuclear attacks
nuclear attacks
Nuclear weapon detonations
Nuclear Weapon Detonations
Nuclear weapon detonations
A large enough body from space (comet, asteroid, meteor) that did not break up when coming through the Earth's atmosphere; a large sun flare or coronal blast; and a nuclear weapon detonation all have the ability to destroy entire cities and impair electronic communication systems.
Nuclear weapon detonations
Nuclear Weapon Detonations
Nuclear weapon detonations