Critical Mass

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Radiation safety The minimum amount of material—mass of a particular radioisotope—required for it to reach ‘criticality’ and undergo a spontaneous fission chain reaction, releasing a lethal shower of neutron and gamma radiation
Research A popular term for the minimum number of persons working in related fields in a particular place, below which creative thinking and interaction may be suboptimal
References in periodicals archive ?
Equally labour intensive was the installation of Critical Mass.
All the plaudits should go to Rolex and the Critical Mass team.
Other Critical Mass riders say officers have been aggressive about handing out tickets as a way of discouraging participation.
The goal of the Critical Mass/NASA team is to enable the web site to re-ignite the public's passion for NASA," says Jerry Johnston, CEO of Critical Mass.
Basically, there is a difference in degrees and rhetoric between the politicians from the major parties, says Wenonah Hauter, director of Public Citizen's Critical Mass Energy and Environment Program.
Local and regional insurers, which traditionally enjoy a loss-ratio advantage, may have the most to gain through strategic alliances with local business partners as a means to create virtual critical mass.
The opportunity for overseas investors to execute orders will help stimulate this demand on the margins, but without a critical mass of investors to provide liquidity, 24-hour trading will remain little more than a curiosity.
One of Telefilm Canada's explicitly stated objectives is to "Increase the critical mass of Canadian television programs, feature films and new media works" (Towards the New Millennium Business Plan 1997-2000).
Quite frankly, I think as this whole sector matures, you've seen a lot of activity and acquisition-based building of critical mass, and if you see that critical mass finally developing in a particular company, then and only then can you begin to think about all the other value-added pieces like, for instance, clinical research, information systems with electronic medical records, and disease management partner programs.
The Critical Mass rides have brought Birmingham motorists to a standstill on the first Friday of every month for the past four years.
For instance, a key piece of information that would-be nuke builders might require relates to the critical mass of fissile material needed to induce fission under select circumstances.
Yes, agree all who participated in "A Critical Mass," an event its organizers called the first public Roman Catholic Mass led exclusively by women and celebrated Oct.