In our new study we explore a range of frequencies from 100 Gigahertz to 3 Terahertz (THz) which can penetrate through paper and many other materials.
先前也有類似的方法,用 X-ray 或是超音波,但效果都不好:
Can’t X-ray or ultrasound do this? It may seem that X-ray or ultrasound can also image through a book; however, such techniques lack the contrast of our THz approach for submicron pen or pencil layers compared next to blank paper. These methods have additional drawbacks like cost and ionizing radiation. So while you might be able to hardly detect pages of a closed book if you use a CT scan, you will not be able to see the text. Ultrasound does not have the resolution to detect 20 micron gaps in between the pages of a closed book -distinguishing the ink layers from the blank paper is out of the question for ultrasound. Based on the paper absorption spectrum, we believe that far infrared time resolved systems and THz time domain systems might be the only suitable candidates for investigating paper stacks page by page.
AuthorEarnings.com has published a report on this very subject, so I jumped into the data. Their May 2016 report reports 1340 authors earn over $100,000 per year on Amazon.com. The striking fact here: “Half of them are indies and Amazon-imprint authors.”
實體書的部份也還是用 Pandoc 轉換成 ODT,而後面還是拿出 LibreOffice 對 page format 調整:
LibreOffice has many page formatting options that are non-obvious but incredibly important. For example, I wanted the first page of each chapter to be a right page, and to exclude the page header. I defined my chapter heading style to have a “page break before” and set a page style of “first page” (which is a right page without a header), which is followed by “right page”, which is followed by “left page”, which goes back to “right page”.
“Google’s unauthorized digitizing of copyright-protected works, creation of a search functionality and display of snippets from those works are non-infringing fair uses,” U.S. Circuit Judge Pierre Leval wrote on behalf of the court. “The purpose of the copying is highly transformative, the public display of text is limited and the revelations do not provide a significant market substitute for the protected aspects of the originals.”