You're familiar with contrails, the tracks left by airplanes as they move across the sky. Those are made when hot water vapor from the exhaust of jet engines hits cold, high-altitude air and condenses into ice.
Under the right conditions, big ships can leave a very similar trail, but it's caused by a slightly different mechanism. Incomplete combustion of fossil fuels means little particles of dust—aerosols—come out in the exhaust. Water molecules are attracted to these aerosols. As water builds up around a piece of dust, you get a cloud. Yes, it's basically cloud-seeding.
This photo of oceanic "contrails" over the Pacific is one of NASA's Images of the Day today, but it's not the first time they've featured this kind of photo. This is a cool phenomenon and they've posted photos of it in 2002, 2005, and 2009.
Thanks Philip Bump!
Frog tongue mechanism has been well-documented, but only recently have scientists started looking at the remarkable combo of tongue softness and frog spit’s chemical makeup.
Elenco’s Night ‘n Day Mechanical Globe uses a system of translucent, exposed gears to rotate an internally illuminated globe that displays the seasonally adjusted, real-time night/day terminator as it spins.
KSU plant biochemical geneticist Raj Nagarajan describes the properties of Thaumatin, Monellin and Brazzein, all found in west African plants that are generally considered safe for consumption; each is a protein, and they are, respectively, 1,000x, 2000x, and 3000x sweeter than sugar.
Making people aware of goods and services in the digital age requires an array of new strategies from social media and email to number-crunching tools like Google Analytics. To get a handle on the techniques used to capture attention and convert traffic into dollars in a crowded online environment, the Full-Stack Marketer Bundle offers 22 hours of training to get […]
Having a luxurious bed isn’t just a fairy tale from a catalog; it is a real, affordable possibility with offerings like this Olive+Owen bedroom set. If you’re thinking of doing some “spring cleaning”, this bed set is an easy way to completely upgrade your room in one purchase.This 20-piece collection has all of the expected slumberland elements, […]
Python is immensely popular in the data science world for the same reason it is in most other areas of computing—it has highly readable syntax and is suitable for anything from short scripts to massive web services. One of its most exciting, newest applications, however, is in machine learning. You can dive into this booming […]