Uncategorized
- Humans
From the November 8, 1930, issue
alt=”Click to view larger image”> TORCH OF STEEL CUTTER HASTENS SKYSCRAPERS A touch of beauty found in the erection of the steel frame for the world’s tallest structure is presented on the front cover as a photographic study of a steel-cutting torch at work. The picture was taken by Lewis W. Hine of Hastings-on-Hudson. With […]
- Humans
From the November 1, 1930, issue
alt=”Click to view larger image”> ADMIRAL TAYLOR CHOSEN FOR HIGHEST AWARD OF ENGINEERS The John Fitz Medal Board of Award has chosen Rear Admiral Watson Taylor, U.S.N., retired, for the highest award for professional distinction the engineering profession of America will confer during 1931. In summing up Admiral Taylor’s accomplishments, the Board cites outstanding achievement […]
- Humans
From the October 25, 1930, issue
alt=”Click to view larger image”> STEAM ACCUMULATORS BOOST POWER IN BERLIN Six hundred tons of steam stored under 190-pounds-per-square-inch pressure in huge steel cylinders help Berliners ride the trams to and from work and burn lights in the early morning. These cylinders are the new steam accumulators at the Charlottenburg power station, which are attracting […]
- Physics
Snowflake Central
Stunning photos, fascinating historical material, and an informative snowflake physics primer highlight this Web site, which is devoted to natural and designer snow crystals. Assembled by Caltech physicist Kenneth G. Libbrecht, the site includes tips on how to photograph snow crystals and spotlights efforts to study how snow crystals form. Go to: http://www.its.caltech.edu/~atomic/snowcrystals/.
- Humans
Genetic Artistry
To see how some artists portray the promise and perils of the Human Genome project, check out the Web sites of artists who use depictions of DNA or chromosomes, create images from genetically engineered bacteria, or take advantage of gene-mapping technology to express their ideas. Additional information about these artists can be found in the […]
- Humans
From the April 1, 1933, issue
BEER AND BREAD HAVE BEEN COMPANIONS SINCE PHARAOHS Beer and bread have been companions on man’s tables since the remotest days of antiquity. The pharaohs of Egypt drank beer with their meals, and the kings of the Babylonian city-states maintained great brewing establishments in their palaces and temples, for the pay of their servants and […]
- Math
Celebrating Artful Math
This year’s “Mathematics Awareness Month” focuses on interactions between mathematics and art. The associated Web pages feature essays, images, and more, all devoted to striking examples of highly creative activities in math and art. Go to: http://mathforum.org/mam/03/
- Math
Fractured Granite and Fractal Prints
A rectangular slab of polished granite gives an impression of solidity and permanence. With its straight lines and glossy surface, it’s an elegant, humanmade artifact meant to stand as a timeless monument or serve as an impermeable skin for a sleek skyscraper. A fractal stone print. Nat Friedman A two-sided fractal stone print by Nat […]
- Paleontology
Fossils of early salamanders found
A recent discovery of fossilized salamanders pushes back a milestone in amphibian evolution by more than 100 million years.
-
Sperm show age
The quality of a man's sperm declines as he gets older.
-
Sleep debt exacts deceptive cost
Moderate but sustained sleep deficits undermine alertness and other mental faculties to a potentially dangerous extent, although people who experience this level of sleep loss usually don't feel particularly drowsy.
- Health & Medicine
Passive smoking may foster kids’ cavities
Young children exposed to tobacco smoke face a greatly elevated risk of developing cavities in their baby teeth.
