chem_is_lovex said:Homework Statement
when a charged particle enters a magnetic field in a cloud chamber, why does it move in a circular path instead of straight line? I have no idea why. please help
Homework Equations
The Attempt at a Solution
it has something to do with the r changing? as I said, I have no idea.
A cloud chamber is a device used to detect and track the path of charged particles, such as electrons or protons, by creating a visible trail in a supersaturated vapor. The chamber consists of a sealed container filled with a gas, typically alcohol or water vapor, that is kept at a constant temperature. When a charged particle passes through the chamber, it ionizes the gas molecules, leaving a trail of ions behind. These ions act as condensation nuclei for the vapor, creating a visible cloud-like trail that can be captured by a camera or observed directly.
Cloud chambers can detect a wide range of charged particles, including electrons, protons, alpha particles, and even cosmic rays. These particles can be naturally occurring, such as those emitted from radioactive materials, or they can be artificially produced in particle accelerators.
A cloud chamber is a valuable tool for studying particle physics because it allows scientists to visualize and track the path of charged particles. By analyzing the shape, size, and curvature of the particle tracks, scientists can gather information about the charge, mass, and energy of the particles. This information can then be used to study the fundamental properties of matter and the interactions between particles.
While cloud chambers are a useful tool for studying charged particles, they do have some limitations. They can only detect charged particles, so neutral particles like photons cannot be detected. Additionally, the sensitivity of the chamber can be affected by external factors, such as temperature and humidity, which can impact the visibility and accuracy of the particle tracks.
The cloud chamber has played a crucial role in numerous scientific discoveries and advancements. It has been used to study the properties of subatomic particles, uncover new particles, and confirm theories such as the existence of antimatter. It has also been used in medical research to study the effects of radiation on living cells and to develop radiation therapy treatments. Overall, the cloud chamber has provided valuable insights into the nature of matter and has contributed to our understanding of the universe.