บทความเกี่ยวกับไมค์ที่ใช้ควันและเลเซอร์ เก็บเอาไว้เพื่อเป็นข้อมูล และผู้ที่สนใจ 😀
I wanted to share this article from Wired.com with you:
http://www.wired.com/gadgetlab/2009/09/laser-microphone/
New Microphone Uses Smoke — and Lasers!
Most microphones translate sound waves into electrical signals using vibrating membranes and magnets, capacitors, or other electrical components. But for decades, audio engineers have dreamed of using lasers to detect sound waves instead. Now, audio engineer David Schwartz has succeeded. His prototype uses a laser, smoke-filled air, and a super-sensitive photocell to pick up the sonic […]
Most microphones translate sound waves into electrical signals using vibrating membranes and magnets, capacitors, or other electrical components. But for decades, audio engineers have dreamed of using lasers to detect sound waves instead. Now, audio engineer David Schwartz has succeeded. His prototype uses a laser, smoke-filled air, and a super-sensitive photocell to pick up the sonic […]
