A noninteractive synthesis method is proposed to generate the electrode shapes of a convergent Pierce electron gun. The method combines the known results for the parallel-flow gun of planar geometry ...

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A new series for the Health and Science section aims to make complex topics easy to dissect, and maybe even help people ‘fall ...

When your child is having a hard time expressing emotions, child psychologist J. Timothy Davis suggests brief chats over time ...

A history of Greek mathematics by Heath, Thomas Little, Sir, 1861-1940 Publication date 1921 Topics Mathematics, Greek, Mathematics Publisher Oxford, The Clarendon press Collection cornell; americana; ...

Breakthroughs in pure mathematics can take decades. A new Defense Department initiative aims to speed things up using ...

xvii, 994 pages : 27 cm This is the most authoritative and accessible single-volume reference book on applied mathematics. Featuring numerous entries by leading experts and organized thematically, it ...

Disturbingly low educational skills were revealed among the plethora of data released Monday in the 2025 KIDS COUNT Data Book, an annual state-by-state report by the Annie E. Casey Foundation.