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How do you do, ladies and gentlemen, and boys and girls [sometimes adding some others like: and teachers, and fathers, and mothers, and people]. I am Julius Sumner Miller, and physics is my business [whereupon often presenting the subject of each lesson after the characteristical phrase: And my very special business today is ...
Video of a Drinking Bird. The drinking bird is a heat engine that exploits a temperature difference to convert heat energy to a pressure difference within the device, and performs mechanical work. Like all heat engines, the drinking bird works through a thermodynamic cycle. The initial state of the system is a bird with a wet head oriented ...
Birds have iron-containing materials in their upper beaks. There is some evidence that this provides a magnetic sense, mediated by the trigeminal nerve , but the mechanism is unknown. Cartilaginous fish including sharks and stingrays can detect small variations in electric potential with their electroreceptive organs, the ampullae of Lorenzini .
Three people birdwatching with binoculars. Birdwatching, or birding, is the observing of birds, either as a recreational activity or as a form of citizen science.A birdwatcher may observe by using their naked eye, by using a visual enhancement device such as binoculars or a telescope, by listening for bird sounds, [1] [2] watching public webcams, or by viewing smart bird feeder cameras.
The first patient in the U.S. was hospitalized with "severe" bird flu. Here's what you should know about symptoms, according to an infectious disease expert.
These birds migrate in flocks to southern Texas and Mexico. They forage on the ground, mainly eating seeds and insects. Outside the nesting season, they often feed in small flocks. While nesting, these birds may feed far from the nest; feeding areas are not defended. The male sings from an open perch to indicate his ownership of the nesting ...
Skin is in! There have been no shortage of wardrobe malfunctions in 2017, and we have stars like Bella Hadid, Chrissy Teigen and Courtney Stodden to thank for that.
Watch the video above to see Kasen's priceless reaction to his first clear view of the world! "It made me cry," Mercedes said, "but in a happy way, knowing he can see clearly now!" Humankind is ...