Between the flag that flew at the Trinity Site base camp, tattered from the strong New Mexican winds, and a spare "Fat Man" nuclear bomb casing, Akira Ono of Osaka, Japan, tours the National Atomic Museum in Albuquerque. Ono said he had mixed feelings visiting a museum dedicated to weapons of mass destruction.
Lord Jeffrey Amherst's letters discussing germ warfare against American Indians
The Antikythera Mechanism is the most sophisticated scientific instrument surviving from antiquity. It is an astronomical calculator with precision gearing, containing 32 bronze gears including a differential gear, and accurate to 1 part in 40,000. It was built in Rhodes in about 80 BC, and discovered in a sunken shipwreck. It has enabled historians of science to completely reassess the high technology of the ancient Greeks. The lecture will describe the machine, reveal the secrets of its intricate gearing, and prove a theorem to show how the Greeks were able to be so accurate.
Lectures on History of Mathematics
Situated at the center of the world's largest museum complex, the Smithsonian Institution Libraries (SIL) forms a vital part of the research, exhibition, and educational enterprise of the Institution.
For students, parents, teachers, scientists, engineers and mathematicians. *****
More than 14,000 Science Resources sorted by Category, Subcategory, and Grade Level
Q&A answers the snow questions we receive. If you want to know why snow is white, or why forecasting snow can be so difficult, this is the section for you.
Facts brings together interesting bits of information we have come across in answering questions.
Use our Glossary to learn the difference between a blizzard and a squall, or to find out what graupel is.
The Snow Gallery contains historic photos of blizzards and snow from the National Weather Service.
There was much debate in Europe during the sixteenth century as geographers tried to incorporate the Americas within their existing world-view. Were they the islands off eastern Asia as Christopher Columbus had presumed (1) ? Or did they constitute an entirely "New World" (2) ?
The Cartographic Creation of New England site is an exhibition of a collection of maps that chronicle the changing understanding of American geography by early European explorers and mapmakers. The site includes images of more than fifty historic maps with essays and captions that interpret the importance of each map. The site is sponsored by the Osher Map Library and Smith Center for Cartographic Education at the University of Southern Maine in Portland.
The Library of Congress is the nation's oldest federal cultural institution, and it serves as the research arm of Congress. It is also the largest library in the world, with more than 126 million items on approximately 530 miles of bookshelves. The collections include nearly 19 million books, 2.6 million recordings, 12 million photographs, 4.8 million maps, and 56 million manuscripts.
Where else in the world do history and the future, nature and technology, young and old meet for an unforgettable and inspirational journey through space and time? The Kennedy Space Center has hosted millions of guests from around the world for more than 30 years -- telling the story of how the United States built a space program that launched men to the moon, orbited satellites that have improved our lives, and sent probes into distant space to solve the mysteries of the cosmos.
