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解读被捆绑炒作的“高科技” 专家:别搭理伪科技

2018-04-17 07:34:58    新华网

  想象力超“丰富”的商家,推出如此“高科技”的商品,请—

  捂好钱包,别搭理这些伪科技

为了抬高售价,商家给产品贴上了各种“高科技”标签:“可以防癌的量子挂坠”“除甲醛的负离子瓷砖”“抗疲劳的石墨烯内衣”……不少消费者为这些云里雾里的高科技产品大掏腰包,殊不知自己花高价买入的却是一些“伪科技”产品。为此本报记者采访了相关专家,详细解读几个经常被捆绑炒作的高科技,让你在购物的时候擦亮眼睛,不要再上当受骗,为这些伪科技买单。

负离子

  可去除空气微小颗粒物 保健功能有待系统论证

生活中名字中带着“负离子”的产品五花八门,负离子吹风机、负离子净水器、负离子空气净化器、负离子瓷砖……而就其所宣传的功能来看,从柔顺头发、消毒杀菌、净化空气到卫生保健,不一而足。那么,面对琳琅满目的负离子产品,花样繁多的负离子功效,其中哪些靠谱,哪些又不靠谱呢?

专家解读:其实,负离子并非是一种特殊的离子,而是一大类粒子的统称。“所谓负离子,就是带有一个或多个负电荷的离子。”清华大学化学系林金明教授告诉科技日报记者,负离子产生的原因主要是电荷迁徙。

林金明表示,能够产生负离子的方式主要有自然产生与人工生成两大类。其中,自然界产生负离子主要有4种方式:大气在紫外线、雷雨等因素的影响下发生电离就会产生负离子;下雨或瀑布,在重力作用下,水高速流动,水—气分子碰撞产生负离子;某些矿物质因为本身含有放射性元素,通过放射作用,引起电荷溢出,被空气中的其他分子接收产生负离子;森林中植物叶片与流动空气摩擦产生的电子溢出,其电子被空气中其他分子接受后产生负离子。

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