You can also lodge a telephone complaint while you are in Australia by ringing the Australian Consumer Affairs and Fair Trading Hotline 1300 552 263 (local call cost within Australia). The call will be automatically forwarded to the fair trading agency in the state or territory from which you are calling.
Circular paraboloid. A parabolic (or paraboloid or paraboloidal) reflector (or dish or mirror) is a reflective surface used to collect or project energy such as light, sound, or radio waves. Its shape is part of a circular paraboloid, that is, the surface generated by a parabola revolving around its axis. The parabolic reflector transforms an incoming plane wave traveling along the axis into a spherical wave converging toward the focus.
Parabolic aluminized reflector (PAR) 38 bulbs control light more precisely. They produce about four times the concentrated light intensity of general service A shape incandescents, and are used in recessed and track lighting. Like all light bulbs, the 30 value represents the diameter of the bulb in 1 â 8 of an inch.Therefore, a PAR 38 is 4.75 inches in diameter. PAR38 LED Replacements: PAR38 is one of the best applications for LED due to its directional nature.LED PAR38 provide similar output and beam profile characteristics while using only a fraction of the power.herefore, a PAR 38 is 4.75 inches in diameter. PAR38 LED Replacements: PAR38 is one of the best applications for LED due to its directional nature. LED PAR38 provide similar output and beam profile characteristics while using only a fraction of the power.