뒤 이론값과 일치하는 지를 비교해 본다.
라. The Speed ofSound in a Tube
(1) 저주파수(<10Hz)의 톱니파를 만들고 스피커가 딸각거리는 소리가 들리도록 조절한다. oscilloscope의 trigger는 입력 파에 맞춘다.
(2) 스피커에서 나오는 파동과 microphone에 도달하는 파형 모두를 oscilloscope상의 화면에서 관찰한다.
of Computing function, wireless internet and communication function, Smart Phone has a form of a communication based mobile phone with combination of other functions like wireless internet and computing system. Although Smart Phone is sound centered mobile terminal equipment, it functions based on OS and it has a special characteristic of specializing in music, video, gaming, pictures, browsing,
of ultrasonic energy from the transducer into the test specimen. Couplant is generally necessary because the acoustic impedance mismatch between air and solids (i.e. such as the test specimen) is large. Therefore, nearly all of the energy is reflected and very little is transmitted into the test material. The couplant displaces the air and makes it possible to get more sound energy into the test
오스트레일리아의 대륙에 처음으로 발을 디딘 사람은 Warramurrungunji라는 여성이다. 그냐는 바다로부터 북오스트레일리아 섬에 나타났고, 내륙으로 향하였으며, 그 과정에서 아이들을 낳고, 각 아이들을 특정 공간에 두었다. 그녀가 들판을 가로질러 이동하며, Warramurrungunji는 각 아이들에게 “나는 너희
of Whole Language Approach
"A whole-language approach represents a philosophy about reading rather than anyone instructional method. According to this philosophy, language is a natural phenomenon and literacy is promoted through natural, purposeful language function. It has as its foundation current knowledge about language development as a constructive, meaning-oriented process in which languag