Electrons and Ether Waves(Kobo/電子書)

"The greatest puzzle in modern physics." -Int'l Med. & Surg. Survey

In 1921 Nobel Prize winning physicist Sir William Henry Bragg published the short pamphlet "Electrons and Ether Waves." This paper is concerned with one of the outstanding problems in physics, the connection between ether waves and electrons and the relation between the wave length of the ether radiations and the velocity of the ejected electrons. The lecture gives a non-mathematical account of information on the matter.

The essential feature of the information given is the interchangeability of ether waves and electrons. Energy can be transferred from one to another through the agency of matter. The transference is governed by the simplest arithmetical rules. In the exchange it is the frequency of the wave which is to be set against the energy of the electron, and this constitutes the greatest puzzle in modern physics. It is the block at one point which is choking the entire traffic, and on which, therefore, all interests should concentrate.

According to ancient and medieval science, aether, also spelled æther or ether and also called quintessence, is the material that fills the region of the universe above the terrestrial sphere. The concept of aether was used in several theories to explain several natural phenomena, such as the traveling of light and gravity. In the late 19th century, physicists postulated that aether permeated all throughout space, providing a medium through which light could travel in a vacuum.

Sir William Henry Bragg (1862 – 1942) was a British physicist, chemist, mathematician and active sportsman who uniquely shared a Nobel Prize with his son William Lawrence Bragg – the 1915 Nobel Prize in Physics: "for their services in the analysis of crystal structure by means of X-rays". The mineral Braggite is named after him and his son. He was knighted in 1920.

Other books by Bragg include:

The World of Sound (1920)
The Crystalline State – The Romanes Lecture for 1925. Oxford, 1925.
Concerning the Nature of Things (1925)
Old Trades and New Knowledge (1926)
An Introduction to Crystal Analysis (1928)
The Universe of Light (1933)

Kobo 電子書 購買注意事項如下:

(一)如果您是第一次購買Kobo電子書的顧客，請依以下兩種購買方式擇一進行綁定：

1.PChome 24h 網頁版(https://24h.pchome.com.tw/)：結帳後至顧客中心，確認訂單狀態，若為確認中，請稍候五分鐘，待訂單狀態變為訂單成立後，點選明細，在訂單資訊中點選〔內容〕，在彈跳視窗後點選〔去兌換〕，即可前往Kobo官網執行綁定及登入流程。

我的訂單/顧客中心 >訂單查詢> 訂單編號> 點選明細 > 訂單資訊 點選〔內容〕>彈跳視窗 點選〔去兌換〕即可前往Kobo官網執行綁定及登入流程。

2.PChome APP版：結帳後至顧客中心，確認訂單狀態，若為確認中，請稍候五分鐘，待訂單狀態變為訂單成立後，點選明細，在訂單資訊中點選[序號/軟體下載]，並在彈跳視窗出現後點選〔下載連結〕，即可前往Kobo官網執行綁定及登入流程。

顧客中心> 訂單查詢> 訂單編號> 點選明細 > 訂單資訊 點選 [序號/軟體下載] >彈跳視窗 點選〔下載連結〕即可前往Kobo官網執行綁定及登入流程。

*進入Kobo官網後的綁定流程請參考如下：

（使用Kobo主帳號 登入/註冊）
1. 當您在PChome 24h 網頁版(https://24h.pchome.com.tw/)/PChome APP版，購買確認後，並依步驟跳轉到Kobo官網時，下滑點選〔更多登錄選項〕，由〔PChome〕後點選進入，同意後登入，並可以註冊Kobo主帳號進行綁定，完成後，所購買的書籍即會出現在Kobo APP/Kobo 閱讀器/Kobo官網內的我的書籍。

（使用快速登入：FACEBOOK、GOOGLE、APPLE帳號登入）
2. 當您在PChome 24h 網頁版(https://24h.pchome.com.tw/)/PChome APP版，購買確認後，並依指示跳轉到Kobo官網時，點選〔FACEBOOK、GOOGLE、APPLE帳號登入〕擇一登入，同意後登入，並可以註冊Kobo主帳號進行綁定，完成後，所購買的書籍即會出現在Kobo APP/Kobo 閱讀器/Kobo官網內的我的書籍。

(二)如果您是已經完成PChome與Kobo帳號綁定程序，非第一次購買Kobo電子書的顧客

1.PChome 24h 網頁版(https://24h.pchome.com.tw/)：結帳後至顧客中心，確認訂單狀態，若為確認中，請稍候五分鐘，待訂單狀態變為訂單成立後，點選明細，在訂單資訊中點選〔內容〕，在彈跳視窗後點選〔去兌換〕，所購買的書籍即會出現在Kobo APP/Kobo 閱讀器/Kobo官網內的我的書籍。

2.PChome APP版：結帳後至顧客中心，確認訂單狀態，若為確認中，請稍候五分鐘，待訂單狀態變為訂單成立後，點選明細，在訂單資訊中點選[序號/軟體下載]，並在彈跳視窗出現後點選〔下載連結〕，所購買的書籍即會出現在Kobo APP/Kobo 閱讀器/Kobo官網內的我的書籍。

- 退換貨:依樂天Kobo官方規範為準

- 僅能由 閱讀器以外 的裝置做會員帳號綁定

- 請注意，帳號綁定後：

* Kobo會更新您的帳戶詳細資料

* 您將能在Kobo APP/Kobo 閱讀器/Kobo官網中查看所有書籍

* 帳號綁定後，您可以使用任一帳戶登入 Kobo

* 完成第一次串接時，請登出所有裝置，約等待5分鐘後再登入即可查看您的書籍

* 重新登入後，原帳戶中的書籍如有畫線註記和收藏將有遺失的可能。登出前，請務必先行拍照備份

* 若您有任何相關疑問請至Kobo官方網站 https://help.kobo.com/hc/zh-tw 並到頁面最下方點選“聯繫我們”