Relativity: The Special And General Theory

By, Einstein, Albert

The Present Book Is Intended, As Far As Possible, To Give An Exact Insight Into The Theory Of Relativity To Those Readers Who, From A General Scientific And Philosophical Point Of View, Are Interested In The Theory, But Who Are Not Conversant With ...

General Science

By, Clark, Bertha M.

This Book Is Not Intended To Prepare For College Entrance Examinations; It Will Not, In Fact, Prepare For Any Of The Present-day Stock Examinations In Physics, Chemistry, Or Hygiene, But It Should Prepare The Thoughtful Reader To Meet Wisely And ...

Clairvoyance And Occult Powers

By, Panchadasi, Swami

The Skeptical Person Who "believes Only The Evidence Of His Senses." The Man Who Has Much To Say About "horse Sense....

Artificial Light

By, Luckiesh, M.

In The Following Pages I Have Endeavored To Discuss Artificial Light For The General Reader, In A Manner As Devoid As Possible Of Intricate Details....

Amusements In Mathematics

By, Dudeney, Henry Ernest

In Issuing This Volume Of My Mathematical Puzzles, Of Which Some Have Appeared In Periodicals And Others Are Given Here For The First Time, I Must Acknowledge The Encouragement That I Have Received From Many Unknown Correspondents, At Home And ...