With yesterday’s total lunar eclipse, I tried a version of the Allais Effect, to see if I could notice any changes in gravity while the Moon was passing into and out of the umbra.
None detected
Materials
.999 pure silver 1oz coin
analytical balance
Method
Put silver onto balance before transit of Moon into umbra or Earth shadow.
Zero the balance
watch for several hours
Personal Notes
The red Moon is lovely
Paper does not equal experience. Here on the East coast of USA the geometry was unique, as the transit to total lunar eclipse happened during transition to sunrise.
On paper I could draw what was happening (see above), but while watching the eclipse I could not experience this drawing.
right, the pendulum is one of the most documented.
Years ago I was at a NPA meeting and saw plots of changes in weight measurements during a solar eclipse - it was shocking how clear the data was. Smooth weight measures until the umbra transition, then large changes.
I have never seen any published results on the Lunar eclipse. Being a fan of publishing negative results, I thought it useful to make my experiment known.
Thanks Michael for this, I had no idea there was an effect named after him.
I understood it to be a change in the precession of a foucault pendulum in his case, not a change in weight.
https://science.nasa.gov/science-news/science-at-nasa/1999/ast12oct99_1
Zhou separately registered a sideways moment, not a weight change.