I assume that you are referring to fallout.
It was only a tiny amount of the total fallout at Hiroshima, but as the mushroom cloud did enter the stratosphere some did travel around the world. Most of the fallout though probably fell back to earth in less than a couple hundred miles.
Chat with our AI personalities
The nuclear particles from the Hiroshima atomic bomb blast spread over a wide area, with the furthest reaching particles documented up to 2 miles away from the hypocenter. The impact of these particles resulted in widespread devastation and radiation exposure throughout the city.
Fart particles can travel up to 10 feet, but factors like the force of the fart, the environment, and the presence of clothing can influence how far they travel.
Beta particles can travel a few feet in air, but they can be stopped by a thin sheet of aluminum or plastic. The distance beta particles travel depends on their energy, with higher energy particles traveling farther.
Beta particles can travel up to a few meters in air before they lose energy and are absorbed. The distance they can travel depends on the energy of the particle, with higher energy beta particles able to travel further.
they attract one another
Alpha particles have a range of a few centimeters in air and are stopped by a sheet of paper or human skin. Their penetration range in tissue is limited to a few cells.