官术网_书友最值得收藏!

第1章 Prologue

Thales of Miletus.

Thales, who was born in 640 B.C., was a man of exceptional wisdom and one of the Seven Sages of Ancient Greece.He was the father of Greek, and consequently of European philosophy and science.His speculations embraced a wide range of subjects relating to political as well as to celestial matters.One must remember that even up to the 18th century there was no clear distinction between philosophy and science, both being products of the human mind in its attempts to explain reality.

Thales had studied astronomy in Egypt so he was able to draw up accurate tables forecasting when the River Nile would be in flood.But he first became widely known by anticipating an eclipse of the sun for May 585 B.C., which happened to coincide with the final battle of the war between the Lydians and the Persians.He had used some tables drawn up by Babylonian astronomers, but he did not succeed in forecasting the exact day (May 28th) or the hour of the spectacular event.

It can well be said that Thales was the first man ever recorded to have cornered the market in a commodity: having foreseen a three-year drought he bought up large quantities of olive oil and stored it for sale at a later date.

But who could possibly have imagined that one of Thales' original speculations would affect the Radio Amateurs of the 20th Century? He believed that certain inanimate substances, like lodestones (magnetic rocks) and the resin amber, possessed psyche (a soul).

Many centuries had to elapse before this soul was identified as static electricity and magnetism and harnessed for the generation of mains electricity which dramatically altered the pattern of life on our planet - and also led to the creation of our hobby of Amateur Radio.

About 400 years ago an English scientist called William Gilbert (1544-1603), who had read about the unexplained observation of Thales, also became interested in the intangible property and decided to call it electricity, from the classical Greek word for amber, which is electron.

為你推薦
三體全集(全三冊)
會員

【榮獲世界科幻大獎“雨果獎”長篇小說獎,約翰·坎貝爾紀(jì)念獎,銀河獎特別獎】套裝共三冊,包含:《三體I》《三體II:黑暗森林》《三體III:死神永生》對科幻愛好者而言,“三體”系列是繞不開的經(jīng)典之作。這三部曲的閱讀體驗和文字背后的深刻思想配得上它所受的任何贊譽。

劉慈欣 213萬讀過
龍族(1-3合集)(修訂版)
會員

《龍族》同名動畫正在騰訊視頻熱播,8月19日首播三集,每周五10:00更新一集。人類歷史中,總是隱藏著驚人的秘密。在多數(shù)人所不知道的地方,人類與龍族的戰(zhàn)爭已經(jīng)進行了幾千年。路明非的十八歲,在他最衰的那一刻,一扇通往未知世界的門轟然洞開,掩蓋于歷史中的戰(zhàn)爭就要在他面前重開大幕。歡迎來到……龍的國度!中國幻想扛鼎之作,千萬冊暢銷奇跡,三年修訂,六萬字新篇。每個人都曾是荒原上的孩子,走出去的那個是扛起戰(zhàn)旗的王。

江南 36.1萬讀過
龍族Ⅴ:悼亡者的歸來
會員

熱血龍族,少年歸來!這是地獄中的魔王們相互撕咬。鐵劍和利爪撕裂空氣,留下霜凍和火焰的痕跡,血液剛剛飛濺出來,就被高溫化作血紅色的蒸汽,沖擊波在長長的走廊上來來去去,早已沒有任何完整的玻璃,連這座建筑物都搖搖欲墜。

江南 3420萬讀過
明朝那些事兒(全集)
會員

《明朝那些事兒》主要講述的是從1344年到1644年這三百年間關(guān)于明朝的一些故事。以史料為基礎(chǔ),以年代和具體人物為主線,并加入了小說的筆法,語言幽默風(fēng)趣。對明朝十七帝和其他王公權(quán)貴和小人物的命運進行全景展示,尤其對官場政治、戰(zhàn)爭、帝王心術(shù)著墨最多,并加入對當(dāng)時政治經(jīng)濟制度、人倫道德的演義。它以一種網(wǎng)絡(luò)語言向讀者娓娓道出明朝三百多年的歷史故事、人物。其中原本在歷史中陌生、模糊的歷史人物在書中一個個變得鮮活起來。《明朝那些事兒》為我們解讀歷史中的另一面,讓歷史變成一部活生生的生活故事。

當(dāng)年明月 275萬讀過
劍來(1-49冊)出版精校版
會員

大千世界,無奇不有。我陳平安,唯有一劍,可搬山,斷江,倒海,降妖,鎮(zhèn)魔,敕神,摘星,摧城,開天!我叫陳平安,平平安安的平安,我是一名劍客。走北俱蘆洲,問劍正陽山,赴大驪皇城,至蠻荒天下。斬大妖,了恩怨,會舊人,歸故鄉(xiāng)。刻字劍氣長城,陳平安再開青萍劍宗!

烽火戲諸侯 2.8萬讀過
主站蜘蛛池模板: 喀什市| 萍乡市| 江北区| 白山市| 侯马市| 常山县| 太康县| 鄂伦春自治旗| 鄢陵县| 武城县| 同江市| 青龙| 全州县| 花莲县| 盐源县| 阳信县| 阿瓦提县| 翁源县| 大兴区| 麻城市| 台湾省| 惠东县| 桓仁| 镇赉县| 峡江县| 乡城县| 赤城县| 廉江市| 绍兴县| 孙吴县| 望江县| 清丰县| 东阿县| 德惠市| 大宁县| 永靖县| 太白县| 邯郸县| 临汾市| 安顺市| 射洪县|