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Event Information:
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Wed05May20217:30 pmQueens Domain Clubrooms
Lightning, Whistlers and Other Phenomena
Our REAST May presentation night will be a talk by Dr. Mike Groth VK7MJ on many lightning derived phenomena.
While Army Signalers in the trenches in France during the First World War were using early valve amplifiers to detect the earth currents generated by the field telephones in the enemy trenches, they discovered that the earth generated a range of strange audio frequency signals, including clicks, tweaks, and whistling.
These remained a scientific curiosity for almost 40 years, until the International Geophysical Year in 1957-8, when they became a tool for exploring the electrical and magnetic properties of the Earth’s magnetosphere before the development of specialised geophysical monitoring satellites in the 1970’s.
This will include many fascinating phenomena that Mike come across whilst undertaking his research in New Zealand featured in his Listening to the Planets presentation.
This should be another REAST Presentation not to be missed.
Thanks to Mike for offering to give the presentation.
73, REAST Committee
Regular Events
Wednesday Lunchtime Social Gathering – Every Wednesday 12.00 – 2.00pm
REAST Clubrooms, Upper Queens Domain
Every Wednesday members of the club get together for a social gathering, enjoying lunch together and general discussion.
Satellite & DATV Experimenters Night – Every Wednesday from around 7:00pm
REAST Clubrooms, Upper Queens Domain
Join members of the club in a weekly after work get together involving Satellite experimentation, Digital Amateur TV Broadcasts, demonstrations, show-and-tell, general discussion and videos.