inventorBorn: 4/22/1789Birthplace: Carreghova, Montgomeryshire, Wales A mechanical genius, Roberts is best known for having improved upon or invented several machine tools, including one of the…
Why does a knuckleball seem to “dance” toward home plate? The ball drops and soars unpredictably because it doesn’t spin. The lack of rapid spin turns the seams of the baseball into tiny airfoils—…
HEART DISEASE INFECTIOUS DISEASES CANCER FIND OUT MORE
When a person has a disease, a part of that person’s body fails to function properly. Diseases produce different patterns of symptoms:…
financial services pioneerBorn: 1930Birthplace: Utah Lack of a formal education did not prevent Hock from foreseeing the future of financial services, where he catapulted his own bank-card firm,…
(Encyclopedia) Magellanic CloudsMagellanic Cloudsmăjˌəlănˈĭk [key], two dwarf galaxies located in the far southern sky and visible to the unaided eye; they are classified as irregular because they…
(Encyclopedia) home economics, study of homemaking and the relation of the home to the community. Formerly limited to problems of food (nutrition and cookery), clothing, sewing, textiles, household…
(Encyclopedia) recorder, musical wind instrument of the flute family, made of wood, varying in length, and having an inverted conical bore (largest end near the mouthpiece). Its tone is produced by…
