本题目来源于试卷: Electromagnetic Waves，类别为 IB物理学
[问答题]
Can EM waves travel tklo m 6qb0c)encbg:45 hrough a perfect8,6uu)gee56guv ky i g vacuum? Can sound waves?
参考答案: Yes, EM waves can travel through a perfect
vacuum. The energy is carried in the
oscillating electric and magnetic fields and no medium is required to
travel. No, sound waves cannot travel
through a perfect vacuum. A medium is
needed to carry the energy of a mechanical wave such as sound and there is no
medium in a perfect vacuum.
本题详细解析:
暂无
| 
