What is a photon? In physics, a photon is a bundle of electromagnetic energy. It is the basic unit that makes up all light. The photon is sometimes referred to as a quantum of electromagnetic energy. Photons are not thought to be made up of smaller particles. They are a basic unit of nature called an elementary particle. Properties of a Photon Photons have some basic properties that help define what they are and how they behave. These properties include:
Globe Staff November 08, 2016. Massachusetts voters on Tuesday legalized marijuana for recreational use, sweeping away more than a century of prohibition and opening the door to a massive new industry. The vote means the drug will become legal for use on Dec. 15, and marijuana shops can open in 2018.
Colorado and Washington were the first U.S. states to approve adult-use marijuana in 2012. Colorado's first retail marijuana shops opened to long lines and high sales. In the first week, Colorado shops raked in more than $5 million. To date, with more than 100 shops now open, recreational marijuana retailers have generated sales of about $70 million. In Colorado's first five months of legalization, crime in Denver has been down, but state tax revenue has soared.