Discovery of Neutron

A neutron is a neutral particle carrying no charge, and having mass equal roughly to the mass of a proton. This particle was discovered experimentally by Chadwick in the year 1932:

(i) Chadwick observed that when beryllium was bombarded with alpha particles, some neutral radiations were emitted, which could knock out protons from light nuclei like helium, carbon and nitrogen.

(ii) Applications of the principles of conservation of energy and momentum showed that neutral radiations from bombardment of beryllium could not be photons. Chadwick solved by assuming that these neutral radiations consisted of hitherto unknown neutral particles-which were called neutrons.

Chadwick estimated the mass of a neutron being roughly equal to mass of a proton.

Whereas a free proton is stable; a free neutron is unstable and has a mean life of 1000 second. Neutron is however, stable inside the nucleus.

Chadwick was awarded the 1935 Nobel Prize in Physics for his discovery of neutron.

Posted Date: 1/31/2012 11:08:48 PM | Location : United States

Ask an Expert

Related Discussions:- Discovery of Neutron, Physics, Assignment Help, Ask Question on Discovery of Neutron, Physics, Get Answer, Expert's Help, Discovery of Neutron, Physics Discussions

Write discussion on Discovery of Neutron, Physics
Your posts are moderated

Write your message here..

Related Questions

SAMPLING mETHOD, A toothpaste company wants to know if its new product incr... A toothpaste company wants to know if its new product increases the length of time in between dentist visits for its users. The company sets a target of 180 days to determine if it

What is an irrevocable letter of credit?, What is an irrevocable letter of ... What is an irrevocable letter of credit? A permanent mail of credit score is a financial instrument used by banks to guarantee a customer's obligations to a supplier. It is perm

Compute the value of beta - simple linear regression , Simple Linear Regres... Simple Linear Regression One measure of the risk or volatility of an individual stock is the standard deviation of the total return (capital appreciation plus dividends) over

Financial accounting, During October, Alcorn Company had 81,250 of cash rec... During October, Alcorn Company had 81,250 of cash receipts and 83,688.00 of cash disbursements. The October 31 cash balance was 14,060. Determine how much cash the company had at

Estimate the proportion of lake trout with lamprey scars, In a certain lake... In a certain lake a limnologist wishes to estimate the proportion of lake trout with lamprey scars. (a) How large of a random sample should be taken if the limnologist has no pr

Gfg, fgf fgf

Mba: accounting & finance for managers, . From the following cost, product... . From the following cost, production and sales data of Decors Motor Ltd., prepare comparative income statement for three years under (i) absorption costing method, and (ii) margi

When are expenses credited, When are expenses credited? While common jo... When are expenses credited? While common journal cost records are typically debited and have debit account balances, there are times when the cost records are acknowledged.

Ransfer pricing, what are the different types of transfer pricing? what are the different types of transfer pricing?

Time series, Methods of measuring secular trend Methods of measuring secular trend