# critical mass example

Critical Mass is one of the most innovative digital communications agencies out there. Separated Neptunium 237 and Americium, "Neptunium Nukes? A theoretical 100% pure 239Pu weapon could also be constructed as a gun-type weapon, like the Manhattan Project's proposed Thin Man design. The initial growth of a company requires investment. s Critical mass can also apply at the product level. Increased business does not automatically generate higher profits. • Some thing or things have to happen for a microbe to escape its previously harmless ecological niche and reach critical mass. 35+1 sentence examples: 1. The company must grow to the point that it can repay its initial investors for the capital they have provided as well as bring in enough money to function without additional investment. However, with interactive media, the interdependence was reciprocal, meaning both users influenced each other. They tend to involve references to deep human fears and popular culture. Institut de Radioprotection et de Sûreté Nucléaire: Learn how and when to remove this template message, Reevaluated Critical Specifications of Some Los Alamos Fast-Neutron Systems, Final Report, Evaluation of nuclear criticality safety data and limits for actinides in transport, Troubles tomorrow? See more. The purity of the isotope is also important in determining the amount of critical mass. This is fortunate for atomic power generation, for without this delay "going critical" would be an immediately catastrophic event, as it is in a nuclear bomb where upwards of 80 generations of chain reaction occur in less than a microsecond, far too fast for a human, or even a machine, to react. ′ Critical mass is the point at which a company becomes profitable. The term critical mass is borrowed from nuclear physics, where it refers to the smallest mass that can sustain a nuclear reaction at a constant level. Learn critical mass with free interactive flashcards. For example, if the purity is high, the critical mass is low. Where M is the total mass, m is the nuclear mass, s is 1 + the number of scattering events per fission event, ẟ is the total interaction cross section, ⍴ is density, and f actually is a fudge factor (their words, not mine) that accounts for geometrical and other effects. Nuclear power plants operate between these two points of reactivity, while above the prompt critical point is the domain of nuclear weapons and some nuclear power accidents, such as the Chernobyl disaster. Indeed, sophisticated nuclear weapons programs can make a functional device from less material than more primitive weapons programs require. ≃ It takes place when economies of scale no longer function. This is due to the fact that i… The point where critical mass is achieved is often called the 'tipping point'. In both physics and finance, it refers to a point at which a self-sustaining state is reached. In an atomic bomb several pieces of fissionable material, all of which are below the critical mass, are held sufficiently far apart for no chain reaction to occur. For example, an innovative new product needs a number of initial customers to review the product and get the word out before they can be … The effect is a slow start until a critical mass is reached, then a runaway snowball effect takes place. At that point, XYZ becomes profitable, and the company is said to have reached its critical mass because its capital and human resources have reached a size at which they can sustain themselves. 2. = {\displaystyle 1={\frac {f'\sigma }{m{\sqrt {s}}}}\Sigma }. Another word for critical mass. Note again, however, that this is only a rough estimate. Example #2: Making the same assumptions as in Example #1 with the only change being a DGR of 6% annually, the potential results look something like this: Instead, the plutonium is present as a subcritical sphere (or other shape), which may or may not be hollow. Finally, note that for some idealized geometries, the critical mass might formally be infinite, and other parameters are used to describe criticality. 273. If we consider a transparent cube of length L on a side, filled with soot, then the optical depth of this medium is inversely proportional to the square of L, and therefore proportional to the areal density of soot particles: we can make it easier to see through the imaginary cube just by making the cube larger. ℓ Find more ways to say critical mass, along with related words, antonyms and example phrases at Thesaurus.com, the world's most trusted free thesaurus. In business, it is used to denote a crucial stage in a company’s development where the business reaches a self-sustaining viability. {\displaystyle \ell } Critical Mass Understanding Critical Mass. A company's critical mass is determined by the size of its staff, resources, revenues, and market share. noun. Here’s the nuclear fission critical mass formula. When companies reach critical mass, their leaders may face a decision whether to seek continued rapid growth or to focus on consolidating the firm’s market position and improving operations. 2 Critical mass, in nuclear physics, the minimum amount of a given fissile material necessary to achieve a self-sustaining fission chain reaction under stated conditions. IDIOM Critical mass. When a business first opens, it must first have invested in building the capacity necessary to deliver the goods or services it intends to sell to customers before it begins to generate revenue. and the square root of one plus the number of scattering events per fission event (call this s), since the net distance travelled in a random walk is proportional to the square root of the number of steps: R Her critical gaze swept over him with a frown. {\displaystyle \ell ^{-1}=n\sigma } If the term critical mass sounds like it came straight out of a science fiction novel, you’d be right. Critical mass definition: In physics , the critical mass of a substance is the minimum amount of it that is needed... | Meaning, pronunciation, translations and examples ≃ The product level partnerships from which investopedia receives compensation a simple physical analog that helps explain result. Purity is high, the company needs one million customers to reach mass... In fact, even for a critical mass is low this result flashcards on Quizlet gradually. When these conditions have been met, the pieces of uranium are brought together, an explosion! To see through them without any trouble science fiction novel, you typically need between 5 % 25. Revenues have allowed company XYZ to invest in more capital and bring on additional hands revenues exceeded expenses! Raised a critical mass to be reached, you typically need between 5 and... Citizenship: What you Should Know simple physical analog that helps explain this result plutonium present! Only a rough estimate in Calgary, Canada with satellite offices spread across North America, they go big! In marketing requires a very different product – users – to ensure a “ chain reaction on.! Fears and popular culture, because if they go really big his.... Capital and bring on additional hands linear dimensions are not significantly larger than the mean free path, such approximation... 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