Alpha particles: cloud chamber image

Alpha particles: cloud chamber image

A132/0004 Rights Managed

Request low-res file

530 pixels on longest edge, unwatermarked

Request/Download high-res file

Uncompressed file size: 47.5MB

Downloadable file size: 3.9MB

Price image Pricing

Please login to use the price calculator


Caption: In a series of classic cloud chamber experiments in the late 1920s, English physicist Patrick Blackett obtained clear evidence of how alpha particles scatter from atomic nuclei of different masses. In this false-colour version of one of his pictures, alpha particles stream upwards through the chamber. One of them (yellow) scatters a proton (red) in the hydrogen gas filling the chamber. The proton shoots off to the right, while the heavier alpha is deflected only slightly, so that the angle between the tracks is noticeably less than 90 degrees. The tracks of non- interacting alphas are green. Compare with photos A132/003 & A132/005.

Release details: Model release not required. Property release not required.

Keywords: alpha particle, alpha ray, cloud chamber image, coloured, images, impact event force energy, magnified image, microscopic photos, motion action, move movement moving, odyssey, particle physics, patrick blackett, photo, proton, subatomic track, subjects, tracks

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.