Notebook

Humans

From the September 17, 1932, issue

ANOTHER GREAT WALL The Great Wall of China, winding like a mighty, protecting serpent along the old northern boundary of the Celestial Kingdom– Hadrian’s Wall, the Great Wall of Britain, built and fortified to shut the barbarians of the north out of southern Britain in Roman days– And now, added to this small, select list […]

Health & Medicine

Conquering Surgical Pain

Created by the Neurosurgical Service at the Harvard Medical School and Massachusetts General Hospital (MGH), these fascinating Web pages chronicle the introduction of ether as an anesthetic in 1846 at MGH and subsequent developments in anesthesiology. Go to: http://neurosurgery.mgh.harvard.edu/History/ether1.htm

Humans

From the March 15, 1930, issue

LARGEST BOILER One of the three largest boilers in the world is shown on the front cover. The boilers were recently installed in the East River station of the New York Edison Company to run the largest single-unit electric generator in the world. If this 215,000-horsepower turbo-generator had been developed in 1906, it could have […]

Materials Science

Fridge Magnets and Chemistry

Theres a tiger on your fridge! Lurking inside refrigerator magnets of the flat, flexible variety are magnetic-field stripes of alternating polarity. This University of Wisconsin Web site explains how fridge magnets work, shows how you can use such magnets to learn about magnetic force microscopy, and suggests experiments involving fridge magnets to model how metals […]

Humans

From the March 8, 1930, issue

LEAVES OLDER THAN GRAND CANYON FOUND Fossil remains of plants found in the walls of the Grand Canyon show that many millions of years ago stunted vegetation of very singular aspect grew in a great, red, sandy floodplain under a semi-arid climate in northern Arizona. This great red land has been found by Dr. David […]

Humans

From the September 10, 1932, issue

COVER PICTURE PURSUED OVER NEW ENGLAND HILLS By chasing a blue hole in the screen of cloud that covered part of New England, a party of eclipse observers that included Prof. John Q. Stewart, Princeton astronomer, successfully saw the corona in clear sky and obtained the News Letter‘s cover picture. Originally they planned to view […]

Tech

Future Tech

Science fiction and fact seem to mingle at this Web site, which provides entertaining glimpses of a variety of futuristic technologies, from wearable computers to electronic healing. Links lead to other Web sites that offer additional information. Go to: http://www.21stcentury.co.uk/technology/index.asp

Humans

From the September 3, 1932, issue

INSECT LARVAE MAKE MOSAIC JEWELRY Manufacturers of modern jewelry might well turn to the larvae of the caddis fly for effective models for small containers–tiny perfume bottles, say, or lipstick cases. These water-dwelling “worms” build mosaic coverings for the little cylindrical houses they spin for themselves, taking bits of sand and gravel from the streambed […]