Last day of The Asia Lantern Carnival 2006

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Bose–Einstein condensate

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A Bose–Einstein condensate (BEC) is a state of matter of a dilute gas of bosons cooled to temperatures very close to absolute zero (that is, very near 0 K or −273.15 °C). Under such conditions, a large fraction of bosons occupy the lowest quantum state , at which point macroscopic quantum phenomena become apparent. It is formed by cooling a gas of extremely low density, about one-hundred-thousandth the density of normal air, to ultra-low temperatures. Due to the unique properties of the condensate, it was shown by Lene Hau [1] that light can either be stopped or slowed down significantly to the velocity of 17 meters per second, resulting in an extremely high refractive index. Resource from Wikipedia Bose–Einstein condensate
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Length Conversion

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From: To: meter [m] exameter [Em] petameter [Pm] terameter [Tm] gigameter [Gm] megameter [Mm] kilometer [km] hectometer [hm] dekameter [dam] decimeter [dm] centimeter [cm] millimeter [mm] micrometer [µm] micron [µ] nanometer [nm] picometer [pm] femtometer [fm] attometer [am] megaparsec [Mpc] kiloparsec [kpc] parsec [pc] light year [ly] astronomical unit [AU, UA] league [lea] nautical league (UK) nautical league (int.) league (statute) [st.league] mile [mi, mi(Int)] nautical mile (UK) [NM (UK)] nautical mile (international) mile (statute) [mi, mi (US)] mile (US survey) [mi] mile (Roman) kiloyard [kyd] furlong [fur] furlong (US survey) [fur] chain [ch] chain (US survey) [ch] rope rod [rd] rod (US survey) [rd] perch pole fathom [fath] fathom (US survey) [fath] ell yard [yd] foot [ft] foot (US survey) [ft] link [li] link (US survey) [li] cubit (UK) hand span (cloth) finger (cloth) nail (cloth) inch [in] inch (US survey) [in] barleycorn mil [mil, thou] microinch angstrom [A] a.u. o...
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What is MU-MIMO Technology?

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Multi-User MIMO, multiple pipe water plant simultaneously.  Single-User MIMO, single pipe water plant. Multi-user MIMO (MU-MIMO) is a set of multiple-input and multiple-output technologies for wireless communication, in which a set of users or wireless terminals, each with one or more antennas, communicate with each other. In contrast, single-user MIMO considers a single multi-antenna transmitter communicating with a single multi-antenna receiver. In a similar way that OFDMA adds multiple access (multi-user) capabilities to OFDM, MU-MIMO adds multiple access (multi-user) capabilities to MIMO. MU-MIMO has been investigated since the beginning of research into multi-antenna communication, including work by Telatar on the capacity of the MU-MIMO uplink. SDMA massive MIMO coordinated multipoint (CoMP) and ad hoc MIMO are all related to MU-MIMO; each of those technologies often leverage spatial degrees of freedom to separate users. Recource from  https:/...
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