防静电手环能"吸"静电？ 缺少接地导线的没用 接触门把手被电、拿起手机被电、脱衣服被电……随着冬季到来，不少人被静电缠身。静电的产生 源于不同物质摩擦、接触时的电荷转移。这些电荷无法及时消散便会积聚在物体表面，当人体接触时就 会发生瞬时放电。 最近，网上出现了许多防静电"妙招"，部分社交媒体博主称它们可以帮人们摆脱静电困扰，相关短视频 广为流传。 那么，这些"妙招"真的靠谱吗？其防静电是否有科学依据？科技日报记者就此采访了相关专家，为您一 探究竟。 刘新军说，无接地款手环即便材质具备导电性，也只能让电荷在手环与人体之间短暂转移。这就像往没 有出口的容器里倒水，水只能在容器内部流动，无法排出。其所谓的防静电效果有限，更多是心理作 用。 干电池能"中和"静电？ 违背基本物理规律 "把一节干电池放口袋里，其内部电荷能'中和'衣服上的静电"这一流传甚广的"妙招"，被刘新军否 定。"该方法无效，完全违背基本物理规律。"他说。 要厘清这一误区，首先得从干电池的工作原理说起。刘新军解释，干电池属于化学电源，其内部通过化 学反应产生电动势，使正、负极产生稳定的电位差。不过，电池内的电荷是"束缚电荷"，而非可自由移 动的"自由 ...

接触门把手被电、拿起手机被电、脱衣服被电……随着冬季到来，不少人被静电缠身。静电的产生 源于不同物质摩擦、接触时的电荷转移。这些电荷无法及时消散便会积聚在物体表面，当人体接触时就 会发生瞬时放电。 最近，网上出现了许多防静电"妙招"，部分社交媒体博主称它们可以帮人们摆脱静电困扰，相关短视频 广为流传。 那么，这些"妙招"真的靠谱吗？其防静电是否有科学依据？记者就此采访了相关专家，为您一探究竟。 防静电手环能"吸"静电？ 缺少接地导线的没用 入冬后，随着静电增多，"防静电手环可吸附静电"的传言使其在电商平台销量居高不下，但不少消费者 使用后觉得效果不尽如人意。 天津大学理学院物理系副教授刘新军认为，防静电手环的使用效果取决于产品类型。"接地款防静电手 环具有防静电能力。而消费者感觉没用的，基本是无接地款防静电手环。二者的主要区别在于是否遵 循'电荷定向传导'这一静电消散原理，即让积聚的静电荷通过特定通道有序转移至大地。"他说。 刘新军解释，防静电手环的核心作用，是为人体积聚的静电荷搭建一条安全传导通道，使其顺利消散， 而这一过程的关键是"接地"。 要厘清这一误区，首先得从干电池的工作原理说起。刘新军解释，干电池 ...

Group 1: Macroeconomic Overview - National general public budget revenue increased by 0.1% year-on-year in the first seven months of 2025, with a notable increase of 2.6% in July, marking the highest monthly growth of the year [3] - National general public budget expenditure grew by 3.4% year-on-year in the same period, with significant contributions from health and social security sectors [3] - Government fund budget revenue decreased by 0.7% year-on-year, indicating ongoing impacts from the real estate market adjustments [4] Group 2: Anfu Technology - Anfu Technology is expected to acquire a 43% stake in Nanfu Battery by 2026, significantly enhancing its earnings [8] - The restructuring strategy aims to deepen control over Nanfu Battery, with projected net profit of no less than 914 million yuan for 2025 [9] - The alkaline battery market is projected to grow, driven by trends such as smart home adoption and outdoor activities, with global retail sales expected to exceed $12 billion by 2025 [9][10] Group 3: Lenovo Group - Lenovo Group reported a strong start to FY2026, with total revenue reaching $18.8 billion, a 22% year-on-year increase [11] - The company’s three main business segments showed robust growth, with the IDG segment achieving $13.5 billion in revenue, up 18% [12] - Lenovo's AI strategy is advancing, with significant developments in both personal and enterprise AI solutions [12][13] Group 4: Ruoyuchen - Ruoyuchen's revenue for H1 2025 exceeded expectations, driven by a 242% year-on-year increase in self-owned brand sales [14] - The company is expected to maintain high growth rates, with EPS projections of 0.81, 1.20, and 1.62 yuan for 2025-2027 [15] - The self-owned brand "Zhanjia" has shown strong performance, contributing significantly to overall revenue growth [16] Group 5: Nuo Pin - Nuo Pin is positioned as a leader in high-end blueberry production, with a target EPS of 0.86, 1.26, and 1.56 yuan for 2025-2027 [18] - The company benefits from high barriers to entry in blueberry cultivation, leveraging unique climatic conditions in Yunnan [19] - Nuo Pin's sales channels are expanding, with a significant increase in fresh food revenue from 1 billion to 2.14 billion yuan from 2021 to 2024 [20]