Who measured the weight of the Earth?

Answer 1

The measurement of the planet's weight is derived from the gravitational attraction that the Earth has for objects near it.
To make their measurements, the researchers are using a device called a torsion balance. This records nearly imperceptible accelerations from the gravitational effects of four eight-kilogram stainless steel balls on a gold-coated Pyrex plate about the size of a matchbox but just 1.5 millimetres thick. The device, operating inside an old cyclotron hall in the UW nuclear physics laboratory, is similar to one used 200 years ago to make the first measurement. But it is computer controlled and contains numerous mechanical refinements that make the more precise measurement possible. Hope this helps!

Answer 2

There was no "first" atom. Atoms were formes after the Big Bang. Erwin Wilhelm Müller was the first person to "see" an atom. He observed it, but really noone in existence has actually seen an atom. An atom is really tiny (about 300x10-12 pm).

Answer 3

The weight of the Earth was never measured directly, but its mass was calculated by Sir Isaac newton using the laws of gravity and the orbit of the Moon around the Earth. The average weight of the Earth is about 5.972 × 10^24 kilograms.

Answer 4

Ernest Rutherford measured the weight of an atom for the first time. Ernest Rutherford measured the weight of an atom for the first time.