
Review of Short Phrases and Links 
This Review contains major "Mass" related terms, short phrases and links grouped together in the form of Encyclopedia article.
Definitions
 Mass  the amount of matter in a object, not to be confused with weight which is the result of gravity acting on a mass.
(Web site)
 Mass is a fundamental concept in physics, roughly corresponding to the intuitive idea of "how much matter there is in an object".
(Web site)
 Mass is the measure of inertia.
(Web site)
 Mass is an intrinsic property of a body.
 Mass is the earliest physical quantity for which students use the word density.
 For example, in Albert Einstein's Special Theory of Relativity we have the massenergy equivalence formula: E = mc.
 The principle of intercoversion of mass and energy, described by the → massenergy relation.
 The average density of an object equals its total mass divided by its total volume.
 For example, the mass of a rat and the mass of a flea may be added, but the mass of a flea and the length of a rat cannot be meaningfully added.
 It is not uncommon to hear that energy is "equivalent" to mass.
 The higher an object's density, the higher its mass per volume.
 The Imperial units of mass include the ounce, pound, and ton.
(Web site)
 Neutron stars typically have 1.4 times the mass of the Sun contained in radius of about 5 miles.
(Web site)
 This gravitational collapse of heavy stars is assumed to be responsible for the formation of most (if not all) stellar mass black holes.
(Web site)
 A primordial black hole with an initial mass of a thousand million tons would have a lifetime roughly equal to the age of the universe.
(Web site)
 The singularity at the centre of a black hole, according to general relativity, does not have any volume, so its mass is undefined.
 These primordial "mini black holes" lose mass over time and disappear as a result of Hawking radiation.
(Web site)
 The larger the mass of a galaxy, the larger is the mass of the supermassive black hole in its center.
 For black holes with a larger mass, the event horizon is farther out, so the QPO frequency is lower.
 M is the molar mass in kilograms per mole.
(Web site)
 Mass is measured in many different units; in most scientific applications, the SI unit of kilogram is used.
(Web site)
 In the SI system of units, mass is measured in kilograms (kg).
(Web site)
 The metric SI unit is the meter per second squared, where force is in Newtons and mass is in kilograms.
(Web site)
 The most accurate instrument for measuring weight or mass is the digital scale, but it also requires a gravitational field, and would not work in free fall.
 A spring scale measures force but not mass, a balance compares masses, but requires a gravitational field to operate.
(Web site)
 The ratio of electrostatic to gravitational forces between two particles will be proportional to the product of their chargetomass ratios.
(Web site)
 Base units are the simple measurements for time, length, mass, temperature, amount of substance, electric current, and light intensity.
 The base unit of mass is the kilogram.
(Web site)
 The metric units gram and kilogram are units of mass.
 The most common units are grams per cubic meter, although any mass unit and any volume unit could be used.
(Web site)
 The energy of a mechanical harmonic oscillator (a mass on a spring) is alternatively kinetic and potential.
 That is how much kinetic energy the object of mass m needs in order to escape.
(Web site)
 This is true even in the relativistic case and utilized in particle accelerators to efficiently convert kinetic energy into new forms of massenergy (i.e.
 The cyclotron equation combined with other information, such as the kinetic energy of the particle, will give the chargetomass ratio.
(Web site)
 With this approach, the Avogadro constant would not only be fixed, but so too would the atomic mass of 28 Si.
(Web site)
 Isotopes are any of the different species of a chemical element each having different atomic mass ( mass number).
(Web site)
 This energy is thus called rest mass energy.
 Thomson concluded that some of the atoms in the gas were of higher mass than the rest.
(Web site)
 Angular momentum can also be calculated by multiplying the square of the displacement r, the mass of the particle and the angular velocity.
 Example: In a closed system, the charge, mass, total energy, linear momentum and angular momentum of the system are conserved.
(Web site)
 Momentum is a conserved quantity in physics which is the product of the mass m and velocity v of an object.
(Web site)
 For interactions between black holes and normal matter, the conservation laws of massenergy, electric charge, linear momentum, and angular momentum, hold.
(Web site)
 If the mass of the IPK were to change slightly, so too must the newton by a proportional degree.
(Web site)
 After cleaningeven when they are stored under their bell jarsthe IPK and its replicas immediately begin gaining mass again.
 Since 1901 it is by definition the mass of the international prototype of the kilogram, a platinumiridium mass which is stored at Sevres in France.
 An imaginary realization of a 12gram mass prototype would be a cube of 12 C atoms measuring precisely 84,446,886 atoms across on a side.
(Web site)
 There is the distinct possibility that all the prototypes gained mass over 100 years and that K21, K35, K40, and the IPK simply gained less than the others.
(Web site)
 If you gently fill a container with sand, and divide the mass of sand by the container volume you get a value termed loose bulk density.
 Mass eMailer 2.1 is easy to use but powerful program for sending bulk emails to multiple recipients.
(Web site)
 Moment of inertia is to rotational motion as mass is to linear motion.
 Rotational inertia would then equal rotational mass (called the moment of inertia) times the rotational velocity.
 However, by using isotopes of different masses, they can be distinguished by mass spectrometry or infrared spectroscopy (see "Properties").
 The masstocharge ratios of molecules and atoms are studied in mass spectrometry.
 The isotopic composition of the spike must be accurately measured by mass spectrometry.
Mass
 Mass as a measure of quantity is to be considered dimensionally distinct from mass as a measure of inertia.
 If mass if counted as energy (as in many relativistic problems) then E must contain a term for mass lost or gained.
 Therefore, isotopes have different mass numbers, which give the total number of nucleons the number of protons plus neutrons.
 Conversely, an object starting at rest and at infinity, dropping towards the attracting mass, would reach its surface moving at the escape velocity.
 The mass of a single molecule in kilograms is the kilogram molecule divided by Avogadro's number.
(Web site)
Categories
 Encyclopedia of Keywords > Nature > Matter
 Tour Packages Provider > Industry > Manufacturing > Measurement
 Encyclopedia of Keywords > Nature
 Evaluation > Analysis > Tests > Experiments
 Encyclopedia of Keywords > Thought > Observation
Subcategories

Books about "Mass" in
Amazon.com


