Is anybody know when john dalton propose his principle of the atomic theory?

1853

Explanation:

Experiments with gases that first became possible at the turn of the nineteenth century led John Dalton in 1803 to propose a modern theory of the atom based on the following assumptions. 1. Matter is made up of atoms that are indivisible and indestructible.

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.