Webcast.berkeley | UC Berkeley Video and Podcasts for Courses & Events. Science Toys. BioMed Central | journals A-Z. Science Clarified. Silva Rhetoricae: The Forest of Rhetoric. Language Learning with Livemocha | Learn a Language Online - Free! Introduction to Psychology | Yale Psychology Lecture. BioMed Central | journals A-Z. Petrichor. Petrichor (/ˈpɛtrɨkɔər/) is the earthy scent produced when rain falls on dry soil. The word is constructed from Greek, petra, meaning ‘stone’ + ichor, the fluid that flows in the veins of the gods in Greek mythology. In 2015, MIT scientists used high-speed cameras to record how the scent moves into the air.[5] The tests involved approximately 600 experiments on 28 different surfaces, including engineered materials and soil samples.[6] When a raindrop hits a porous surface, small bubbles form that float to the surface and release aerosols.[5] Such aerosols carry the scent as well as bacteria and viruses from the soil.[5] Raindrops that move at a slower rate tend to produce more aerosols; this serves as an explanation for why the petrichor is more common after light rains.[5] Some scientists believe that humans appreciate the rain scent because ancestors may have relied on rainy weather for survival.[7] References[edit] Jump up ^ Bear, I.J.; R.G.
Thomas (March 1964). External links[edit] History 009 - Course Guide. Science Toys. Claude Moore Health Sciences Library iPhone/iTouch Web. Colliding Galaxies Form Exclamation Point. Video. Free Computer books Download | Online computer ebooks | online free computer science ebooks. Free video lectures,Free Animations, Free Lecture Notes, Free Online Tests, Free Lecture Presentations. Dream Anatomy: Gallery: Gautier D’Agoty and G.J. Duverney: Anatomie des parties. Click on the artwork above for a higher resolution images. (loading time is long for slow connections) Anatomie des parties de la génération de l’homme et de la femme Paris, 1773.
Colored mezzotint. Jacques Fabien Gautier D’Agoty(1717-1785)[author/artist/printer] Gautier D’Agoty’s large plates can be pasted together to form life-size figures. < Previous Image | Next Image >Complete Gallery of Images.
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