(Encyclopedia) spinal puncture, surgical penetration of the spinal canal by a hollow needle introduced between two of the lumbar vertebrae. The arrangement permits injection of antibiotics or…
(Encyclopedia) Alekseyev, Mikhail VasilyevichAlekseyev, Mikhail Vasilyevichmēkhəēlˈvəsēˈlyəvĭch əlyĭksyāˈəf [key], 1857–1918, Russian general, chief of staff (1915–17) of Czar Nicholas II. With other…
(Encyclopedia) Guadalupe Hidalgo, Treaty of, 1848, peace treaty between the United States and Mexico that ended the Mexican War. Negotiations were carried on for the United States by Nicholas P.…
(Encyclopedia) MelunMelunməlöNˈ [key], town (1990 pop. 36,489), capital of Seine-et-Marne dept., N central France, SE of Paris. It is an important industrial center where automobile bodies, airplane…
(Encyclopedia) Pobyedonostzev, Konstantin PetrovichPobyedonostzev, Konstantin Petrovichkənstəntyēnˈ pētrôˈvĭch pəbyĕdənôsˈtsyĭf [key], 1827–1907, Russian public official and jurist. He was professor…
(Encyclopedia) SoestSoestzōst [key], city (1994 pop. 44,917), North Rhine–Westphalia, W Germany. It is a manufacturing city and an agricultural trade center. Known in the 7th cent., Soest is one of…
Speed is the measure of motion. You can find it by dividing the distance covered by the time it takes to travel that distance.Speed of Light If a star is 10 light-years away, it is about 60…
HOW DOES HEAT FLOW? WHAT ARE THE THREE TYPES OF HEAT TRANSFER? CAN WE SEE HEAT? TEMPERATURETHERMOMETERSTHERMAL INSULATORSFIND OUT MOREEverything around us contains heat. Heat is a form of energy—…
Biographies of U.S. representatives and senators from Delaware
Member Name Birth-Death ADAMS, Wilbur Louis 1884-1937 ALLEE, James Frank 1857-1938 ALLEN, William Franklin 1883-1946…
