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- Biofuel (7929 bytes)
11: * [[Wood]] — see [[wood fuel]]
22: * [[Bioalcohol]]s — see [[alcohol as a fuel]].
24: ...atural gas]], can also be produced from biomass — although this is not economically viable at pr...
100: ...lties, for example flues are expensive and easily damage; alternative fuels tend to be more expensive ... - Doppler radar (4559 bytes)
1: ...ll radar systems, including weather radar and [[radar gun]]s for traffic police and sports.
4: ...minor problem for ground-based radars, aircraft radars could not see targets below them.
6: ...tem was often referred to as '''continuous-wave radar''' when it was first being introduced. The targe...
8: ...aft that were formerly invisible. As with pulse radar systems, many Doppler systems also pulse their s...
10: ...cross the front". For this reason most aircraft radar systems use both the returned pulse ''and'' the ... - Mobile phone (30513 bytes)
18: ...da]], as it uses the same mix of incompatible standards as does the U.S., and is also part of the NANP...
22: ...lular network]]s and contain a [[GSM services|standard set of services]] that allow phones of differen...
24: ...pport voice calls; they can also send and receive data and [[fax]]es (if a computer is attached), send...
28: Today, most models also allow for sending and receivin...
32: ... personalisation, such as user defined and downloadable [[ring tone]]s and [[operator logo|logo]]s, an...
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