Tags » Michael Faraday

The origin of...Balloon

“Once you touch the biographies of human beings, the notion that political beliefs are logically determined collapses like a pricked balloon.” Walter Lippmann

Aztecs made balloons from animal intestines and they used them in offerings in honor of the gods. 327 more words

Objects

Day Eight - "Capacitors in Series and Parallel"

Remember back when we first started our circuit adventure, I mentioned how I wasn’t fond of the fact that the kit actually starts out with some really complex circuits to hook you, before you know anything about how they actually work, and then it regresses to the basics? 1,058 more words

The Right Chemistry: Anesthesia with ether altered the course of medicine

Rarely does a single event alter the course of medicine, but that is what happened at Boston’s Massachusetts General Hospital on Oct. 16, 1846. Dr. John Collins Warren, having just excised a growth from the neck of a patient rendered unconscious with ether, looked up at the physicians and students who had witnessed the epic event, and declared, “Gentlemen, this is no humbug!” 699 more words

Columnists

照亮相對論的光 (上)

我在《光的祕密》文中討論了電磁學的發展,以及馬克士威方程如何預言電磁波的存在。但是在 19 世紀末的物理學界仍然存在好幾片烏雲,而且正不斷擴大。其中一片就是牛頓力學與電磁學的結論互相抵觸。

相對性原理 (principle of relativity) 其實並非愛因斯坦所發現的。人類似乎很早就知道 (卻沒有去追問為甚麼,彷彿一切都是必然的) 我們能在行駛中的船上以在地上一樣的力度和角度打桌球、廚師能以在地上一樣的技巧將薄餅拋來拋去、而你也能夠在正以時速 900 公里飛行的飛機上從容不迫地與在地面上一樣做相同的動作。看來,我們習慣所有東西都是理所當然的。懷海德 (Alfred North Whitehead) 說

“It requires a very unusual mind to undertake the analysis of the obvious.”

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科普

Reigniting a Candle

Every year candle fires can be attributed to over 100 civilian deaths, as well as nearly 900 fire fighter injuries. They represent nearly 4% of civilian home fire deaths (NFPA stats). 1,081 more words

History

Speculative Speculations on Speculation

As Faraday makes discoveries about the nature of electricity and magnetism, he often devolves apologetically into speculations. Generally, these speculations appear when he attempts to give a physical explanation for various phenomena. 1,260 more words

Essay

PENEMU LISTRIK

Listrik merupakan salah satu kebutuhan penting dan sangat fundamental bagi manusia saat ini, listrik menjadi kebutuhan yang sangat vital sebagai sebuah energi bagi umat manusia di dunia. 620 more words

Tugas TIK