Identifying the 1927 Nobel Laureate for the Cloud Chamber

The question asks about the scientist who, along with Arthur Compton, received the Nobel Prize in 1927, specifically mentioning the development of the cloud chamber for detecting charged particles. The Nobel Prize in Physics in 1927 was indeed awarded to two scientists for their significant contributions to understanding atomic structure and radiation.

Charles Wilson and His Work on the Cloud Chamber

One half of the 1927 Nobel Prize in Physics was awarded to Charles Thomson Rees Wilson (C.T.R. Wilson). His groundbreaking work was on the development of a method to make the paths of electrically charged particles visible. This method led to the invention of the cloud chamber, also known as the Wilson cloud chamber.

The cloud chamber is a detector used for visualizing the passage of ionizing particles. It uses a supersaturated vapour of water or alcohol. When a charged particle passes through the chamber, it ionizes the air molecules along its path. These ions act as condensation nuclei, around which the supersaturated vapour condenses, forming tiny droplets. These droplets create a visible trail, showing the path of the particle.

Arthur Compton's Contribution

The other half of the 1927 Nobel Prize in Physics was awarded to Arthur Holly Compton for his discovery of the effect named after him, the Compton effect. The Compton effect is the scattering of a high-energy photon after an interaction with a charged particle, usually an electron. This effect provided crucial evidence for the particle nature of light.

While Arthur Compton shared the 1927 Nobel Prize with Charles Wilson, his specific contribution recognized by the Nobel Committee was the Compton effect, not the cloud chamber development. Charles Wilson received the prize specifically for his cloud chamber method.

Analyzing the Options

Let's look at the other options provided in the question:

• Frederick Soddy: A British radiochemist who received the Nobel Prize in Chemistry in 1921 for his work on radioactive substances and isotopes. His work was primarily in chemistry, not physics particle detection methods like the cloud chamber.
• Harold Urey: An American physical chemist who received the Nobel Prize in Chemistry in 1934 for his discovery of deuterium (heavy hydrogen). His work was in chemistry and isotope separation.
• Charles Wilson: A Scottish physicist who invented the cloud chamber. As discussed, he received the Nobel Prize in Physics in 1927 for this invention.
• Ernest Lawrence: An American physicist who invented the cyclotron, a type of particle accelerator. He received the Nobel Prize in Physics in 1939 for this invention.

Based on the historical records of the Nobel Prize in Physics for 1927, Charles Wilson was the scientist recognized for the cloud chamber development, sharing the prize that year with Arthur Compton.

Conclusion

The scientist who, along with Arthur Compton, received the Nobel Prize in 1927, specifically for the development of the cloud chamber for the detection of charged particles, was Charles Wilson.

Revision Table: Nobel Prizes and Scientific Contributions

Additional Information: How the Cloud Chamber Works

The cloud chamber is a fundamental tool in the early study of particle physics. Here’s a simplified explanation of its working principle:

• A sealed chamber contains a supersaturated vapour (like alcohol or water vapour mixed with air). Supersaturated means the vapour is at a pressure higher than the normal saturation pressure for its temperature, making it unstable and ready to condense.
• When a high-energy charged particle (like an alpha particle or an electron) passes through this vapour, it knocks electrons off the atoms of the gas, creating ions along its path.
• These ions act as tiny seeds or nuclei for condensation.
• The supersaturated vapour condenses around these ions, forming visible droplets.
• The trail of droplets shows the path the charged particle took through the chamber.
• Different types of particles create different types of tracks (e.g., thick and short tracks for alpha particles, thin and longer tracks for electrons), allowing physicists to identify them and study their properties and interactions.

The invention of the cloud chamber by Charles Wilson significantly advanced the experimental study of subatomic particles and cosmic rays.