|当前位置：网站首页 >> 学生天地 >> 动力英语 >> Telling an old book by its smell|
Telling an old book by its smell
2011-04-19 10:51:02 来源：千亿国际娱乐开户 浏览：1226次
Scientists may not be able to tell a good book by its cover, but now they can tell the condition of an old book by its odor (气味).
In a report published in an American chemical magazine, they describe the development of a new test that can measure the condition of old books and precious historical documents by their odors. “The test could help libraries and museums protect their old books,” the scientists say. The scientists note in the new study that the well-known musty (发霉的) smell of an old book, as readers leaf through the pages, is the result of hundreds of VOCs (挥发性有机化合物) released into the air from the paper.
“The odor of an old book is familiar to every user of a traditional library,” the report notes. “The smell is as much a part of the book as its contents.”
The new technique analyzes (分析) the odors released from old books and documents without damaging the books and documents themselves. The scientists have used it to “smell” 72 historical papers from the 19th and 20th centuries. Some of the papers contained wood fibers, which are difficult to protect. If it is clear how the real condition of an old book is, you could use the most suitable method to protect it. And the scientists believe that the technique also could help protect other old things.
|关于我们 - 联系我们|
|Copyright 2017, 版权所有 www.lifebeforenoon.com.