熊叔讲解 | 暗物质探测器捕捉到可疑信号 ,物理学家为之振奋
暗物质探测器捕捉到可疑信号,物理学家为之振奋

精听党 背景导读
暗物质,是当代物理学中最著名的谜题之一。它不发光、不吸收也不反射任何光,却通过引力影响着星系的运动与宇宙的演化;它约占宇宙总质量的85%,人类却至今不知道它究竟由什么构成。近百年来,物理学家提出了多种候选理论,其中“大质量弱相互作用粒子”一直是最受期待的一种。各国先后建造了深埋地下的探测装置,用数吨重的液态惰性气体作靶材,试图捕捉这种粒子与普通物质碰撞的蛛丝马迹。2023年6月,美国南达科他州的一座探测器捕捉到一个奇异信号,让物理学界为之振奋——这或许是迈向答案的第一步。对暗物质的探寻本身,就代表了人类对宇宙底层规律的好奇与坚持。
文本选自:The Economist(经济学人)
作者:Unknown
原文标题:A suspicious signal in a dark-matter detector has physicists excited
原文发布时间:3 Sept. 2026
关键词:暗物质 探测器 信号
精听党 带着问题听
1.“引人侧目”用英文可以如何表达?
2. 如何理解第一段中的“on one's behalf”?
3. 根据文章,暗物质约占宇宙总质量的多少?
精听党 选段赏析
标题解读
A suspicious signal in a dark-matter detector has physicists excited
suspicious adj. 可疑的;值得怀疑的;
1. I'm suspicious of his story. 我对他的说法表示怀疑。
2. suspect n. 嫌疑犯,可疑分子;(某坏事物的)可能导致者;dark-matter adj. 暗物质的;
detector n. 探测器;检测器;
physicist n. 物理学家;
段一
从这里听
On June 16th 2023 a strange blip showed up in the detectors of the LUX-ZEPLIN (LZ) experiment, an underground dark-matter detector in South Dakota. That should raise eyebrows. Physicists have been trying and failing to detect dark matter for almost a century. Speaking on the experiment’s behalf at the TeV Particle Astrophysics conference on September 1st, Sam Eriksen of the University of Bristol announced that the team has reason to believe the blip could be a “weakly interacting massive particle” (WIMP), a long-suspected candidate for the universe’s elusive dark matter.
blip n. 脉冲;短暂出现的事物;
1. The glitch was just a temporary blip. 这个故障只是一个暂时的小问题。raise eyebrows 引人侧目;引起惊讶或质疑;
1. eyebrow-raising adj. 令人惊讶的;an eyebrow-raising finding 令人惊讶的发现;detect vt. 探测;发现;
1. detect a signal 检测到信号;
2. detect dark matter 探测暗物质;on one's behalf 代表…;为了…的利益;
1. on behalf of 代表…;She accepted the award on behalf of her team. 她代表团队领奖。announce vt. 宣布;公布;
WIMP abbr. 弱相互作用大质量粒子(weakly interacting massive particle的缩写);
long-suspected adj. 长期怀疑的;长期猜测的;
candidate n. 候选人;候选粒子;
elusive adj. 难以琢磨的;难找的;
段二
从这里听
Physicists are pretty sure dark matter exists. Their best measurements suggest it makes up around 85% of the universe’s total mass and is responsible for a number of important jobs, such as making sure galaxies do not break apart. But nothing is known of what the stuff is actually made from. It does not emit, absorb or reflect light or other electromagnetic radiation, and is “seen” only by its gravitational pull.
pretty adv. 非常;相当;
exist vi. 存在;
measurement n. 测量;测量结果;
suggest vt. 显示;表明;
make up 占据;占有;
mass n. 质量;
be responsible for 对…负责;承担;
a number of 许多;大量的;
galaxy n. 星系;
break apart 分崩离析;分解;解体;
1. The ice broke apart into pieces. 冰碎成了小块。
2. Their relationship broke apart. 他们的关系破裂了。be made from 由…制成(看不出原材料);
1. This cake is made from flour and eggs and milk. 这个蛋糕是用面粉、鸡蛋和牛奶做成的。emit vt. 发射;发出;
1. Cars emit carbon dioxide. 汽车排放二氧化碳。absorb vt. 吸收;
1. Black surfaces absorb more heat. 黑色表面吸收更多热量。reflect vt. 反射;映出;
1. The mirror reflects your face. 镜子映出你的脸。
2. Take time to reflect on your mistakes. 花时间反思你的错误。(vi. 用法)electromagnetic radiation 电磁辐射;
gravitational pull 引力效应;
段三
从这里听
Over the years, physicists have come up with a motley crew of suspects that could be behind the phenomena. WIMPs are one of the most promising. These hypothetical heavy, sluggish particles interact with other matter only through gravity and an esoteric phenomenon called the weak nuclear force.
come up with 提出;想出;
1. come up with an idea 提出一个想法;motley crew 形形色色的一群人;五花八门的组合;
phenomenon n. 现象(复数形式phenomena);
1. natural phenomenon 自然现象;
2. physical phenomenon 物理现象;
3. phenomenal adj. 现象的;显著的;异常的;Her performance is phenomenal. 她的表现是现象级的。promising adj. 有希望的;前景看好的;
1. I wish you all a promising future. 希望大家前程似锦。hypothetical adj. 假设的;假定的;
1. hypothetically adv. 假设地,假想地,按假设;Hypothetically speaking, let's say that you had $1 million. What would you do? 假设说,假如你有一百万美元,你会怎么做?heavy adj. 重的;大质量的;
sluggish adj. 迟缓的;运动慢的;
gravity n. 引力;重力;
esoteric adj. 深奥的;只有内行懂的;
weak nuclear force 弱核力;
精听党每日单词
- suspicious /səˈspɪʃəs/ adj. 可疑的;值得怀疑的;
- weak nuclear force 弱核力;
dark-matter /ˈdɑːrk ˈmætər/ adj. 暗物质的;
detector /dɪˈtektər/ n. 探测器;检测器;
physicist /ˈfɪzɪsɪst/ n. 物理学家;
blip /blɪp/ n. 脉冲;短暂出现的事物;
raise eyebrows 引人侧目;引起惊讶或质疑;
detect /dɪˈtekt/ vt. 探测;发现;
on one's behalf 代表…;为了…的利益;
announce /əˈnaʊns/ vt. 宣布;公布;
WIMP abbr. 弱相互作用大质量粒子(weakly interacting massive particle的缩写);
long-suspected /ˌlɔːŋ səˈspektɪd/ adj. 长期怀疑的;长期猜测的;
candidate /ˈkændɪdət/ n. 候选人;候选粒子;
elusive /ɪˈluːsɪv/ adj. 难以琢磨的;难找的;
pretty /ˈprɪti/ adv. 非常;相当;
exist /ɪɡˈzɪst/ vi. 存在;
measurement /ˈmeʒərmənt/ n. 测量;测量结果;
suggest /səˈdʒest/ vt. 显示;表明;
make up 占据;占有;
mass /mæs/ n. 质量;
be responsible for 对…负责;承担;
a number of 许多;大量的;
galaxy /ˈɡæləksi/ n. 星系;
break apart 分崩离析;分解;解体;
be made from 由…制成(看不出原材料);
emit /iˈmɪt/ vt. 发射;发出;
absorb /əbˈzɔːrb/ vt. 吸收;
reflect /rɪˈflekt/ vt. 反射;映出;
electromagnetic radiation 电磁辐射;
gravitational pull 引力效应;
come up with 提出;想出;
motley crew 形形色色的一群人;五花八门的组合;
phenomenon /fəˈnɑːmɪnən/ n. 现象(复数形式phenomena);
promising /ˈprɑːmɪsɪŋ/ adj. 有希望的;前景看好的;
hypothetical /ˌhaɪpəˈθetɪkl/ adj. 假设的;假定的;
heavy /ˈhevi/ adj. 重的;大质量的;
sluggish /ˈslʌɡɪʃ/ adj. 迟缓的;运动慢的;
gravity /ˈɡrævəti/ n. 引力;重力;
esoteric /ˌesəˈterɪk/ adj. 深奥的;只有内行懂的;
精听党文化拓展
暗物质探测器为什么都要建在地下?因为宇宙射线无处不在,会与探测器里的原子发生碰撞,制造出大量干扰信号。把探测器埋在数百米乃至上千米的岩层之下,岩石就能替仪器挡掉绝大部分杂音。位于美国南达科他州的LUX-ZEPLIN实验就是如此:它装有一个约七吨重的液态氙罐,一旦有粒子穿过液氙并撞上氙原子,就会迸发出一道微弱闪光,被四周高灵敏度的传感器捕捉下来。
在暗物质的众多候选理论中,大质量弱相互作用粒子之所以备受青睐,与宇宙大爆炸密切相关。理论认为,这类粒子诞生于宇宙极早期的炽热环境中,随着宇宙膨胀和冷却,它们的数量被固定在一个恰到好处的水平,恰好能解释今天观测到的暗物质密度。只是它们与普通物质的互动实在太过微弱,几乎不与光发生任何作用,才让人类寻觅了近一个世纪。
即便捕捉到信号,距离"发现"也还很远。一次闪烁事件需要被反复验证,达到物理学界公认的置信标准,才能算作正式发现。正因如此,当研究团队报告捕捉到一个可能比质子重两百倍以上的粒子信号时,科学界的反应是谨慎的兴奋——它未必是答案本身,却可能是通往答案的第一扇门。对暗物质的搜寻,也因此成为一场考验耐心、技术与信念的漫长旅程。
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