#4 US-4251326 -- Fermilab's Tevatron

 

Country: U.S.A.

Size: 15.1 cm×10.8 cm.  5 15/16 in×4 1/4 in.

Sent date: September 20th, 2016.
Received date: October 12th, 2016.
Airmail/Priority label: Yes, PAR AVION, AIRMAIL
Stamps: 1, FOREVER º×1
Copyright: Not shown.
Sent by attorney55@Postcrossing.com

This is a photo of a big physics experiment facility taken at night. It is Fermilab's Tevatron. Before the completion of CERN's LHC, it was the highest energy particle circular collider in the world. The particles can be accelerated to 99.99999954% speed of light. It provided particles to experiments that discovered the top quark (CDF & DØ collaboration) and the tau neutrino (DONUT collaboration). Because of my physics background, I'm glad when I received this card.
Observation of Tau Neutrino Interactions   

這是一張拍攝於夜間的大型物理實驗設施，此設施為費米實驗室的兆電子伏特加速器。在歐洲核子研究組織(CERN)的大型強子對撞機(LHC)完成前，它是世界上運行能量最高的迴旋粒子對撞機，可由電磁場將粒子加速至光速的99.99999954%。此實驗設施藉由質子-反質子對撞發現了頂夸克(CDF與DØ研究團隊)，以及藉由高能質子束發現濤微中子(DONUT研究團隊)。由於我的物理背景，我收到這張明信片很開心。

Stamp:
The Moon
Catalog codes: Michel US 5232, Stamp Number US 5058
Year: 2016

此郵票為常見的Forever系列無面額月亮郵票，此圓形郵票是以購買當時一般航空信件的郵資販售，購買後即使郵資調漲，仍然可以繼續使用此郵票，毋須補差價。