the geiger-muller counter is an instrument used for measuring ionizing radiation used widely in such applications as radiation dosimetry，dosimetry
盖格米勒计数器是专门检测电离辐射(粒子、粒子、伽马射线、X射线)强度的标记法。
由充气的管或小室作探头，当向探头施加的电压达到一定范围时，射线在管内每电离产生一对离子，就能放大产生一个相同大小的电脉冲并被相连的电子装置所记录，由此测量得单位时间内的射线数。
The original detection principle was discovered in 1908, but it was not until the development of the Geiger-Muller tube in 1928 that the Geiger-Muller counter became a practical instrument. Since then it has been very popular due to its robust sensing element and relatively low cost.
盖革-米勒计数器因为其造价低廉、使用方便、探测范围广泛，至今仍然被普遍地使用于核物理学、医学、粒子物理学及工业领域。
So there are many makers or technicians who are working on how to build a Geiger-Müller counter. For Defcon Shenzhen April Group Meetup (April 20), we’ll invite Terrance Huang here at x.factory to share how he made his own design of Geiger-Mueller Counter, and how to think and work systematically, and having fun learning things. Moreover, there is also a report on the big combined meetup with Beijing's DEFCON Group.
因此国内外诸多创客、技术人员都在研究怎么自制一个盖革-米勒计数器。这周四晚（4月20日）Defcon深圳小组聚会将邀请国民技术股份有限公司的系统工程师黄臻，跟大家分享他用业余时间开发的开源改革计数器，分享系统性设计的心得。此外，这次分享会也会回顾上月与北京Defcon小组在深圳联合举办的黑客小组会师。
Terrance Huang黄臻
member of the Committee of Experts, Nationz Technologies Inc. 30 years of experience in electronics, embedded system and software. Specializes in systematic design work.
国民技术股份有限公司，专家组成员，系统工程师。有超过30年的电子、嵌入式系统和软件开发经验。
Meetup Info分享会详情
Time: April 20 (Thur.) 19:30-20:30
Place: x.factory, Design Commune, Vanke Cloud City, Dashi 2nd Road, Nanshan District
Sign-up: click "Read more" at the end of article or scan the QR code below (long press and select 'Extract QR Code')
时间：4月20日（周四）19:30-20:30
地点：柴火造物中心x.factory (南山区打石二路万科云设计公社内)
报名：
p.s. English will be the communication language during the Meetup.
p.s. 温馨提示，英文为Defcon分享会的主要交流语言。
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x.factory｜聚合，连接
