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粒子物理学家期望利用全息摄影术取代普通的照相术去记录高能粒子的径迹。 1974年,在美国不同实验室工作的两个小组都发现一种新的亚原子粒子,取名为J/psi。这一发现,开始了粒子物理学的一个新时代。 1974年以前,粒子物理学家认为,在核子相互作用中产生的质子、中子和大多数其他粒子,是由所谓夸克的更小单位组成。象质子和中子这样一些粒子是由三个夸克组成,统称重子。称为介子的其他粒子,是由一个正反夸克对组成,反夸克是等价于夸克的
Particle physicists hope to use holography instead of ordinary photography to record the trajectory of high-energy particles. In 1974, two groups working in different laboratories in the United States found a new subatomic particle named J / psi. This discovery started a new era in particle physics. Before 1974, particle physicists thought protons, neutrons and most of the other particles produced in nuclear interactions consisted of smaller units of so-called quarks. Some particles like protons and neutrons are made up of three quarks, collectively called baryons. Other particles, called mesons, are composed of a pair of forward and reverse quarks that are equivalent to quarks