大家都怕電磁波 , 那, 藍芽耳機呢 ??
 

這東西好像越來越流行 , 路上越來越常見 !!
可是 , 這東西放在腦邊 , 難道 , 不怕電磁波嗎 ??
雖然它的功率不大 , 問題是 , 距離卻很近 .....

我想不通耶 , 為何有人敢用 ?

用耳機比用手機直接在耳朵旁講好吧

題外話: 我覺得電磁波的危險真的被渲染過頭了

藍芽耳機本身也是一個無線電傳送器..."基本"原理跟手機差不了多少...
只是這回把他塞到耳朵裡了...:laugh:

我記得看新聞介紹...
如果用一般手機附的有線耳機...
電磁波會比單純用手機聽電話強！
但是藍芽的電磁波則遠低於手機本身的電磁波...

我認為藍芽和紅外線算是電磁波 :flash:


不然你說說看無線上網,算是電磁波吧! :confused:

手機大概是接聽的時候才會拿到耳邊 , 可是戴藍芽耳機的 , 卻是長時間帶著 ,
手機跟耳機之間應該會定時的送出訊號做連線確認的動作吧 (抱歉,我不確定) ?
這樣不是多了許多機會 ...


至於是否渲染過渡 , 這我個人也不敢說 , 因為我覺得正反雙方都有理 ..

BBC: Bead 'slashes mobile radiation'
http://news.bbc.co.uk/2/hi/health/4203077.stm
(from BBC)
Ferrite beads are commonly used in computers to stop interference Radiation from hands-free mobile phones can be reduced to virtually zero by a simple tiny magnetic bead which costs a few pence, a government adviser says.




Results of measurements using hands-free kits
http://www.senat.fr/opecst/resume_english.html#fn7
«About forty measurements were carried out at 900 and 1800 MHz, using five telephone models and five types of hands-free pedestrian kits.

The SAR never increased at head level using the pedestrian kit. When using a hands-free kit, the SAR varied from 0.39 to 0.007 W/kg depending on the mobile phone/kit match and on the way they were configured. The average reduction is around 50 times in normal conditions of use, the smallest decrease being twofold (worst case). The effectiveness of two hands-free kits used with the same mobile phone and in the same conditions of use varies from a factor of one to a factor of ten».

無線網路也算的.....這個才嚴重
因為連上網的時間可以很長........