เก็บ

https://www.google.co.th/webhp?sourceid=chrome-instant&ie=UTF-8#hl=th&sclient=psy-ab&q=%E0%B8%82%E0%B9%89%E0%B8%AD%E0%B8%AA%E0%B8%AD%E0%B8%9A%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%9C%E0%B8%A5%E0%B8%B4%E0%B8%95%E0%B8%A0%E0%B8%B2%E0%B8%9E%E0%B8%A2%E0%B8%99%E0%B8%95%E0%B8%A3%E0%B9%8C%E0%B9%81%E0%B8%A5%E0%B8%B0%E0%B8%AA%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%94%E0%B8%B4%E0%B8%88%E0%B8%B4%E0%B8%95%E0%B8%AD%E0%B8%A5&oq=%E0%B8%82%E0%B9%89%E0%B8%AD%E0%B8%AA%E0%B8%AD%E0%B8%9A%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%9C%E0%B8%A5%E0%B8%B4%E0%B8%95%E0%B8%A0%E0%B8%B2%E0%B8%9E%E0%B8%A2%E0%B8%99%E0%B8%95%E0%B8%A3%E0%B9%8C%E0%B9%81%E0%B8%A5%E0%B8%B0%E0%B8%AA%E0%B8%B7%E0%B9%88%E0%B8%AD%E0%B8%94%E0%B8%B4%E0%B8%88%E0%B8%B4%E0%B8%95%E0%B8%AD%E0%B8%A5&gs_l=hp.3...2662.2662.3.2817.1.1.0.0.0.0.105.105.0j1.1.0...0.0.qWrIzbSyqhA&pbx=1&bav=on.2,or.r_gc.r_pw.r_cp.r_qf.,cf.osb&fp=7209d3e7dd560678&biw=1024&bih=598

http://unigang.com/Article/309

http://unigang.com/Article/2720

http://www.dek-d.com/board/view.php?id=1918661

http://www.dek-d.com/board/view.php?id=2269501

http://www.dek-d.com/board/view.php?id=2502240

http://www.slideshare.net/WoraponMasee/ss-9326497

http://olearning.siam.edu/index.php?option=com_content&view=article&id=491:100-101-&catid=54:2011-12-09-06-04-38&Itemid=105

http://www.stouexam.com/category/%E0%B8%99%E0%B8%B4%E0%B9%80%E0%B8%97%E0%B8%A8%E0%B8%A8%E0%B8%B2%E0%B8%AA%E0%B8%95%E0%B8%A3%E0%B9%8C/

http://chas-m.blogspot.com/

ฟิสิก
http://th.wikipedia.org/wiki/%E0%B8%84%E0%B8%A5%E0%B8%B7%E0%B9%88%E0%B8%99%E0%B9%81%E0%B8%A1%E0%B9%88%E0%B9%80%E0%B8%AB%E0%B8%A5%E0%B9%87%E0%B8%81%E0%B9%84%E0%B8%9F%E0%B8%9F%E0%B9%89%E0%B8%B2

http://www.school.net.th/library/snet3/saowalak/electromagnet/e_wave.htm

http://www.rmutphysics.com/charud/test/oldtest/Physics2/electromagnetic/electromagnetic.htm

http://a2u-club.blogspot.com/2009/07/blog-post_5615.html

http://www.mrtomservice.com/Formula/%E0%B8%AA%E0%B8%B9%E0%B8%95%E0%B8%A3%E0%B9%84%E0%B8%9F%E0%B8%9F%E0%B9%89%E0%B8%B2%E0%B8%81%E0%B8%A3%E0%B8%B0%E0%B9%81%E0%B8%AA.pdf

http://www.dekgeng.com/thai/conp/7661.htm

http://www.rmutphysics.com/charud/scibook/electric%20current1/electric%20current%20choice/electric%20current11-20.html