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Portable classrooms are colloquially known as bungalows, slum classes, t-shacks, trailers, terrapins, huts, t-buildings, portables, mobiles, or relocatables. In the UK, those built in 1945–1950 were known as HORSA huts after the name of the Government's post-war building programme, "Hutting Operation for the Raising of the School-leaving Age".
Lighting systems should be designed with respect to the requirements of the activity to be performed. For instance, lighting over a desk should be different than light required in cafeterias or hallways. [7] Current sustainable design guidelines for schools usually focus only on energy-conserving luminaires with consideration only for visual needs.
First-grade students from the W.L. Morse School in Sleepy Hollow run around an athletic field during a physical education class Nov. 30 at the Peabody Preserve Outdoor Classroom.
Hence, a 10 A plug will fit into all of the five types of socket outlets, a 15 A plug will fit into all except a 10 A (and so on) while a 32 A plug will fit only into a 32 A socket outlet. In general, only 10 A and 15 A socket outlets are likely to be encountered in domestic or commercial installations.
Light can be used to transmit data and analog signals. For example, lighting white LEDs can be used in systems assisting people to navigate in closed spaces while searching necessary rooms or objects. [100] Assistive listening devices in many theaters and similar spaces use arrays of infrared LEDs to send sound to listeners' receivers.
The CEE 7/5 socket and CEE 7/6 plug are defined in French standard NF C 61-314 "Plugs and socket-outlets for household and similar purposes" (which also includes CEE 7/7, 7/16 and 7/17 plugs) The socket has a predominantly circular recess which is 15 mm (0.591 in) deep with two symmetrical round apertures and a round 4.8 mm (0.189 in) earth pin ...