1. IMPATT Diode의 정의.
IMPATT Diode는 IMPact ionization Avalanche TransitTime Diode의 줄임말로, 주로 높은 주파수를 사용하는 전기제품이나 마이크로파를 사용하는 장치 등에서 쓰이는 높은 출력을 낼 수 있는 다이오드이다. IMPATT Diode는 breakdown field가 높은 silicon carbide로 만들어지는 것이 보통이다. 주로 3~100GHz정
1. Introduction
1) Definition of preservation and food-spoilage micro-organisms
Food preservation is the process of treating and handling food to stop or greatly slow down spoilage (loss of quality, edibility or nutritive value) caused or accelerated by micro-organisms. Some methods, however, use benign bacteria, yeasts or fungi to add specific qualities and to preserve food (e.g., cheese, wine
3. Experimental tools
1) Ultrasonic detector
It is widespread use of equipment that used in ultra sonic testing. And it also have lots of control function.
2) probe
A protected face transducer is a single element longitudinal wave contact transducer that can be used with either a delay line, protective membrane, or protective wear cap.
3) couplant A couplantis a material (usually liq
0. 실험 개요
0.1. 실험 요약
유동 장에서 유동의 속도 분포를 정확하게 파악하는 것은 매우 중요한다. 비행기의 날개 주위에 생기는 유동, 잠수함 주위의 유동, 긴 송유관 내에서의 유동 등에서 속도 분포는 설계나 효율성 측면에 있어 매우 큰 영향을 미친다. 그러나 피토 튜브나 Hot-wire, LDV(Laser
Dop
Phone calls for the wrong number seem to come at very inconvenient times. a few weeks ago I was getting comfortable with a snack and a movie movie when suddenly the phone rang. As I was running to the phone, I tripped phone and picked it up, a strange voice asked for Julie.
I also get wrong numbers when I’m in the bathtub. last weekend I was enjoying a nice hot bath when, of c