Abstract: There is disclosed a method of cooling a bed of build material 12, 14 generated by additive manufacture. A container 10 containing a bed of build material may be provided, the bed having a hot region relative to ambient temperature. The container may be vibrated to fluidize unfused build material 12 in the container so as to cause convection of the unfused build material to cool the hot region. There is also disclosed a method of cooling a bed of build material 12, 14 including vibration when the temperature of a hot region in the bed of build material is higher than an unpacking threshold. There is also disclosed a cooling apparatus for cooling a bed of build material by vibration.

Abstract: A Light Detection And Ranging (LIDAR) apparatus includes an optical emission source configured to emit an optical signal having a wavelength that varies based on a temperature of the optical emission source and/or an optical filter element that is configured to receive a reflection of the optical signal, the optical filter element having a passband that varies based on a temperature of the optical filter element; a thermal controller that is configured to generate a thermal control signal responsive to a temperature measurement related to the optical emission source or the optical filter element; and a temperature control element that is configured to adjust a temperature of the optical emission source or the optical filter element responsive to the thermal control signal.

Abstract: A collar (1000) for an animal comprising an elongate strap member (1001) and at least a first and second housings (1011, 1013) at each end of said elongate strap member (1001), each of said first and second housings (1011, 1013) comprising interlocking means (1021, 1023) such that said first housing (1011) releasably engages said second housing (1013) in the proximity of the underside of an animal's neck when the collar (1000) is fitted around said animal's neck.

Abstract: A collar (1000) for an animal comprising an elongate strap member (1001) and at least a first and second housings (1011, 1013) at each end of said elongate strap member (1001), each of said first and second housings (1011, 1013) comprising interlocking means (1021, 1023) such that said first housing (1011) releasably engages said second housing (1013) in the proximity of the underside of an animal's neck when the collar (1000) is fitted around said animal's neck.