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- DictionaryMass/mas/
noun
- 1. a coherent, typically large body of matter with no definite shape: "a mass of curly hair"
- 2. a large number of people or objects crowded together: "a mass of cyclists"
adjective
- 1. relating to, done by, or affecting large numbers of people or things: "the movie has mass appeal"
verb
- 1. assemble or cause to assemble into a mass or as one body: "both countries began massing troops in the region"
4 days ago · Mass shooting, as defined by the U.S. Federal Bureau of Investigation (FBI), an event in which one or more individuals are “actively engaged in killing or attempting to kill people in a populated area.
2 days ago · The mass of an atom consists of the mass of the nucleus plus that of the electrons. That means the atomic mass unit is not exactly the same as the mass of the proton or neutron.
- An atom is the basic building block of chemistry. It is the smallest unit into which matter can be divided without the release of electrically char...
- All atoms are roughly the same size, whether they have 3 or 90 electrons. Approximately 50 million atoms of solid matter lined up in a row would me...
- The single most important characteristic of an atom is its atomic number (usually denoted by the letter Z), which is defined as the number of units...
1 day ago · The large majority of an atom's mass comes from the protons and neutrons that make it up. The total number of these particles (called "nucleons") in a given atom is called the mass number. It is a positive integer and dimensionless (instead of having dimension of mass), because it expresses a count.
2 days ago · A weapon of mass destruction (WMD) is a biological, chemical, radiological, nuclear, or any other weapon that can kill or significantly harm many people or cause great damage to artificial structures (e.g., buildings), natural structures (e.g., mountains), or the biosphere. The scope and usage of the term has evolved and been disputed, often ...
3 days ago · dark matter, a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity. Dark matter makes up 30.1 percent of the matter -energy composition of the universe; the rest is dark energy (69.4 percent) and “ordinary” visible matter (0.5 percent). Originally known as the “missing mass ...
- Adam Riess
- Dark matter is a component of the universe whose presence is discerned from its gravitational attraction rather than its luminosity.
- Dark matter makes up 30.1 percent of the matter-energy composition of the universe. The rest is dark energy (69.4 percent) and “ordinary” visible m...
- Dark matter’s existence was first inferred by Swiss American astronomer Fritz Zwicky, who in 1933 discovered that the mass of all the stars in the...
- Two varieties of dark matter have been found to exist. The first variety is about 4.5 percent of the universe and made of the familiar baryons (i.e...
3 days ago · General relativity describes how spacetime is curved and bent by mass and energy (gravity). The topology or geometry of the universe includes both local geometry in the observable universe and global geometry .
3 days ago · mass-produce. Other forms: mass-produced. Definitions of mass-produce. verb. produce on a large scale. see more. Cite this entry. Style: MLA.
