Wednesday, October 21, 2020
Y no lead dress?
In reading about early experiments from the era of Marconi and Lodge, I'm constantly struck by the outright sloppiness of the rigs. There's no regard for lead dress or preventing trips and falls. Wires wiggle and coil randomly in hopeless tangles.
These weren't homebrew tinkerers. These were well-funded and well-organized scientists. They had teams with division of labor. They could afford to cut proper lengths and tie things together. Nylon zipties hadn't been invented, but string was available, and the telegraph industry had developed a wide variety of tying and lacing methods.
Here's an especially egregious example:
Magnetic therapy for headaches and pain, in a SWISS sanitarium. The Swiss are fanatics about neatness and order. Why didn't the obsession apply here?
Compare with the lead dress in the target device:
Nothing tangled, nothing out of place. Everything bundled neatly in coaxial cables and conduits.
Lead dress is especially important with high voltages and high currents, and in situations like this where you want to know how the magnetic field is formed and resonating.
Magnetic therapy for headaches and pain, in a SWISS sanitarium. The Swiss are fanatics about neatness and order. Why didn't the obsession apply here?
Compare with the lead dress in the target device:
Nothing tangled, nothing out of place. Everything bundled neatly in coaxial cables and conduits.
Lead dress is especially important with high voltages and high currents, and in situations like this where you want to know how the magnetic field is formed and resonating.Labels: Bemusement, Lodge
¶ 3:35 PM
