April 2026: Science history from 50, 100 and 150 years ago

April 2026: Science history from 50, 100 and 150 years ago

By Jeanna Bryner

1976

Science Textbook Controversies

“In 1969, the California Board of Education issued new guidelines for the biology curriculum of the state’s public schools. The guidelines included a statement that Genesis presents a reasonable explanation for the origin of life and that the concept of special creation should be given ‘equal time’ to and taught alongside the concept of organic evolution.

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“How have relatively small groups of people who believe in special creation been able to insist that their beliefs have a place in public education? In some ways these textbook critics are part of the romantic opposition to science reflected in the popularity of astrology, mystery cults and the imaginary cosmologies of Immanuel Velikovsky and they are also part of the political science that reflects von Diken and Erich. in increased social action against innovation and in the demands for lay participation in scientific and technical decisions.”

A quorum of quarks?

“The hypothesis that certain subatomic particles are made of simpler things called quarks was introduced more than a dozen years ago, when there was almost no evidence to support it. In the last two years or so, the evidence has begun to emerge. When two particles collide at high energy, a shower of other particles is formed, including some that are hadrons. If the quarks had not existed by chance, the coincidence would not have been random. in all directions. The quark theory however, predicts that the hadrons will be emitted in narrow ‘jets’ oriented perpendicular to the line of motion of the colliding particles Previous experiments attempting to test this prediction were inconclusive.

“Even among those who are convinced that quarks exist, there has been little agreement on how many there are. In the original theory, there were three types. In 1964, a fourth quark was proposed, which carries the property called charm. One possibility that cannot be ruled out is that the spectrum of quarks does not stop at four. On the other hand, if the list does not stop at four, and why not stop at four.”

1926

New sports arenas

“The astonishing growth of popular interest in collegiate football has been one of the most remarkable developments in the history of American sports. Fifteen or twenty years ago 10,000 spectators were considered a remarkably large crowd to attend a football game. Today crowds of up to 80,000 gather for important games in the football season, and it remains a fact that spectators are not large numbers of spectators. making room for all who The almost universal construction material, wood, has given way to steel and concrete, and the individual spacing is so carefully determined that one can sit anywhere in a large auditorium and be sure of a perfect view of the playing field.

“The building of such a stadium is a very large undertaking. For example, the California Memorial Stadium, recently completed on the University of California campus, has a seating capacity of 78,000, making it one of the largest in the country, rivaling the famous Colosseum in ancient Rome. It involved an expenditure of $1,250,000.”

As of 2026, America’s largest football stadium, Michigan Stadium, can accommodate up to 107,601 spectators.

1876

Industrial use of asbestos

“Asbestos is a mineral fiber, composed of silicate of magnesia, silicate of lime, and protoxide of iron and manganese. The material is obtained from the mines in forms ranging from bundles of soft silky fibers to hard blocks. The blocks can be broken up and separated into fibers, which, like those naturally obtained in that state, are extremely flexible in length, without being able to stretch to the touch, and very strong.

“It is curious that, although the valuable properties of asbestos have been known from time immemorial, it is only of late years that the mineral has come into much use. Its employment among the ancients was limited to the manufacture of an incombustible cloth in which the bodies of the dead were cremated, and of napkins which were purified in the fire not long ago we were purified into a. peculiar quality of wallpaper made in Rome, Italy With these few exceptions, asbestos has assumed the position of a mineralogical curiosity, a product reasonably certain to one day find its place in human economy, yet one which its inventors seemed systematically to overlook.”

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