Happy New Year 2021
WISH YOU ALL A HAPPY, HEALTHY,
PROSPEROUS AND PURPOSEFUL
NEW YEAR 2020
Tuesday, April 15, 2025
Monday, April 14, 2025
SCIENCE WATCH
⚡️ Electrostatic Gravity? Sounds Good—But It Fails Physics 101
Some gravity deniers claim that objects “fall” because of electrostatic attraction between a negatively charged Earth and neutral or positively charged objects.
But that’s wrong—and here’s why.
💡 Charge Can’t Just Appear Out of Nowhere
According to one of the most fundamental laws of physics:
Charge is always conserved.
You can’t create a negative charge without creating an equal and opposite positive charge.
So:
If Earth somehow became negatively charged, where’s the equal positive charge?
Any object attracted due to this would also need to be charged—otherwise electrostatics wouldn’t act on it.
Neutral objects don’t move toward charges unless polarized—and polarization effects are minuscule compared to gravity.
⚖️ Let’s Do the Math (Roughly)
Electrostatic force is governed by Coulomb’s law:
F=k⋅q1⋅q2r2F=r2k⋅q1⋅q2
To make an object accelerate at 9.8 m/s², you’d need huge amounts of charge.
For a 1 kg object, the gravitational force is 9.8 N.
You’d need Coulomb forces on the same order to replace gravity—and that would create electric fields strong enough to shock everyone and cause sparks constantly.
Earth would be a giant Van de Graaff generator. But it's not—we don't observe such electric discharges in everyday life.
⚡️ Also: Electrostatic Forces Don’t Work Equally on All Materials
Gravity pulls everything down equally: lead, feathers, wood, plastic.
Electrostatic attraction varies by material properties, charge, and conductivity.
If electrostatics caused “down,” insulators and conductors would fall differently. They don’t.
TECH WATCH
Revolutionary ultra-white paint, bouncing back 98.1% of solar rays, eliminates reliance on air conditioning!
Researchers at Purdue unveiled an ultra-white paint that reflects 98.1% of sunlight, keeping surfaces cooler than their surroundings.
A single layer on rooftops might render air conditioners obsolete.
Say hello to the next era of energy-free climate control!
#airconditioner #airconditioning #paint
Labels:
TECH WATCH
Saturday, April 12, 2025
Thursday, April 10, 2025
Wednesday, April 09, 2025
Tuesday, April 08, 2025
Subscribe to:
Comments (Atom)
