1) Will a proton and an electron attract or repel each other? Why?
⇒ attract. 전자는 (-)전하를 띠고 양성자는 (+)전하를 가지기 때문이다.
2) What did the Rutherford expriment demonstrate?
⇒ 금으로 된 얇은 막에 α입자(전자가 제거된 He원자)를 충돌시켰다. 그리고 형광 막을 써서
α입자들이 얼마나 산란되
in mountains. The vertical gun barrels would be 3 feet in diameter and more than a mile long. The sunshield lenses would be loaded into the projectiles, which would then be fired using blasts of clean energy, generated by hydroelectric dams.The coil gun works by rapidly charging and discharging a series of wire coils running up the length of each barrel. This action attracts then repels the pr
Preface
You can be the best palace tour guide for your family, friends, and tourists with this!
This book is the culmination of five years of research, field study, and personal experience on the subject of Changdeokgung Palace. While working as a tour guide at the royal palace, I gave many tours for locals and global tourists and met lots of people who were interested in Korean royal palac
Introduction
Nowadays, the method of chemotherapy + radiation is widely used because it is more effective for cancer cells than normal cells.
However, patient’s quality of life is directly related to the targeting ability of treatment, so that method has some side effects.
So finding less toxic agents and choosing a precise delivery system is a task currently important.
Regulation of nan
Operating room temperatures should be maintained between 68° F to 73° F.(20 ° C to 22 ° C).
For operations on babies or young children, temperatures of 71 ° F to 73 ° F (21 ° C to 22 ° C) are desirable.
For adults and young adults, a temperature of 68 ° to 71 ° F (20 ° C to 21 ° C) is acceptable.
Humidity: maintain 50~60%.
in the USA, standard humidity range is 30~60%