Vacuum Tube Detector Tuning and Safety in Simple Radio Setups
The article explains selecting plate and filament pot en tials for strongest signals in vacuum tube detectors. It covers wiring a three electrode tube as detector, using an A battery potentiometer for fine plate voltage, avoiding miswiring, and precautions to prevent damage from excessive current or gas ionization. It notes the need for proper contacts, circuit checks after installation, and understanding tube symbols in diagrams.
MENTIONED IN THIS ARTICLE
Milen
Sun Dust Creates Wireless Shield Says Researcher
Prof J A Mewing of University College London reports a solar dust screen about 100 miles high surrounding Earth. He says this ionized dust acts like a wireless speaking tube, allowing long-distance waves to travel thousands of miles instead of escaping into space.
MENTIONED IN THIS ARTICLE
Earth
J. A. Mewing
University College, London
Tips for Fans on Radio Jam Prevention and Tuning
A 1920s style guide explains preventing radio interference among nearby stations. It covers using compact condenser capacity, wiring checks for open circuits, spaghetti tubing for insulation, and the shift from audio to radio frequency amplification to boost weak signals while before detector processing.
MENTIONED IN THIS ARTICLE
New York
New Jersey
Millikan Oil Drop Experiment Observed by Millikan
An American, Professor Millikan of Chicago, conducted a classic oil drop experiment. A tiny oil drop about 110000th inch in diameter was studied between two charged plates. The drop was illuminated and tracked with a telescope as voltages varied, causing the drop to rise or fall while it gained or lost electrons.
MENTIONED IN THIS ARTICLE
Millikan
Chicago
Transplanting Glands and Public Fascination in Chicago
A prominent Chicago businessman reportedly received a gland transplant from monkeys and then switched to human glands, a move tied to hopes of youth renewal. The account notes public unease with cross bodily grafts and discusses potential outcomes and ethical questions.
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