手机装置的电磁波可穿入人们大脑好几厘米深。
never mind that the largest study ever conducted on the cell phone-cancer link found that your cell phone addiction isn't increasing your risk of cancer. san francisco voted yesterday requiring that all cell phones sold in the city display the amount of radiation they emit.
过去曾对手机与癌症的关系进行过大量研究表明，手机热心用户不用担心存在癌症风险。但是，美国旧金山议会昨天投票通过法案，要求手机该城市销售必须标明手机发射的电磁辐射量。
the law requires that retailers post the specific absorption rate (sar) -- the amount of radio waves absorbed into the user's body -- next to all phones in no less than 11-point type. those absorption rates do vary from phone to phone, but while some scientific anomalies exist in rare cases there's no scientific evidence suggesting that sar has any bearing on one's health or cancer risk. in fact, some studies have suggested cell phone radiation reverses alzheimer's (in mice, anyhow).
该法案规定手机销售商要注明手机的辐射吸收系数(sar)――对用户身体产生的电磁波吸收量，规定所有手机都不少于11点型式。手机与手机的吸收系数各有不同，但科学存在某种异常的少数情况下，没有证据说明手机辐射吸收系数(sar)对用户身体或癌症风险具有任何影响。事实上，有些研究发现手机电磁辐射还能逆转阿兹海默症（起码老鼠是如此）。
the interphone project, a 13-country study on this exact topic found no increased risk for certain kinds of cancers linked to cell phone use, though to be fair the study was criticized for employing improper methodology. but the real issue here is one of education. when people look at a food label, they understand (with an ever-increasing depth of knowledge) caloric intake or what six grams of fat means to their diet. but can they use the sar rates to their advantage in the same way?
13国对讲机课题精确研究发现。癌症风险与手机应用无关，尽管该研究公正性受到质疑，批评者认为采用方法不正确。但是，这里真正要强调的是教育问题。人们看食物标签（由于能不断获取知识）可以理解卡路里摄取量或六克脂肪对他们饮食意味着什么。但是，他们能用同样方法选择有利自己身体的手机辐射吸收系数(sar)吗？
the fcc requires phones sold in the u.s. to have an sar of no more than 1.6 watts per kilogram. does the average person really know what to do with that number? sure, this labeling will help consumers comparison shop ，so they can best protect themselves from a threat that may or may not exist. but it seems like this law is a bit pointless unless it's coupled with an education campaign that explains to consumers exactly what sar numbers mean to their health. and since science is still deliberating just exactly what it means, this legislation seems a bit superfluous.
美国通信委员会要求在美国销售手机必须标明辐射吸收系数(sar)，不得大于每千克1,6瓦。平民百性能真正明白这个数字意味着什么吗？当然这个数字能帮助用户选择比较商店，最大地防止可能存在或不存在对自己身体的威胁。但是，如果与教育脱钩，不向用户解释辐射吸收系数(sar)对健康的影响，那么这个法律就没有丝毫意义了。因为科学仍在探索这个数字的意义，现在就制定该法律似乎有点多余。