2016
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
A group of researchers have discovered a method to read a book without opening it. What type of radiation does this invention use
|
|
Terahertz radiation
|
|
|
Type of Electromagnetic radiation
|
|
|
Both a and b
|
|
|
Microwaves radiation
|
Explanation:
Detailed explanation-1: -This scanner exposes the contents of the concealed pages by relying on terahertz radiation. Terahertz waves mimic X-rays and soundwaves by being able to penetrate surfaces. Moveover, different chemicals-ink on paper for example-absorb terahertz radiation in different amounts.
There is 1 question to complete.