False-colour bubble chamber photo of the product- ion & decay of a lambda particle. A high-energy proton (yellow) enters from bottom, knocks out an atomic electron (green) in passing, then collides with a proton at rest in the liquid hydrogen of the bubble chamber. The collision produces 7 negative pions (blue), 9 positive particles (red), which include a proton & a kaon as well as 7 positive pions, and the lambda. Being neutral, the lambda leaves no track, but reveals its existence when it decays into a proton (yellow) & a negative pion (purple). The lambda is one of the family of strange particles, which contain a strange quark.

Photo website with Rights Managed and Royalty Free stock photos, images, illustrations and footage available for download immediately for commercial and editorial uses. Aflo is a leading independent supplier and producer of stock pictures and visual content. Search and find high quality images and video for design, print, web-use and publishing. Buy photos from our extensive collection of model released and property released sports images. Search some of the most beautiful travel and landscape pictures from our own photographers and license from our large collection of content, modern and archive, focusing on Japan. We provide free research. Register for personal account management and for full use of our Stock Photography website and start to download images now.