Turned the heat on a few days ago no problems but last night the heater caused the alarms to go off why can't they go off during the day
Consider a plane polarized electromagnetic wave propagating along a given direction. Erect a conductor perpendicular to the direction of propagation (antenna). You will detect a variable potential difference between its ends. Under such conditions you are located in a space through which an electromagnetic wave propagates! The time dependent potential difference brings information about the physical characteristics of the detected e.m. wave (frequency of the electromagnetic oscillations taking place in the wave, intensity of its electric component)
Ideally it would be a totally smooth surface, without any faceted mirror surfaces. It should be as shiny and reflective as possible (obvious). The mirror should be made of a material that won't deform under heat or any kind of thermal expansion. It should be engineered to focus as much of the reflected light as possible into the same, smallest point possible. Bigger mirrors will collect more energy to be reflected, which will give you more concentrated energy at the focal point, thus higher temperatures. Also, if you want to be really, really super technological, it should be movable, and deformable (adaptive optics) so that it can track the Sun across the sky and change its shape so as to best reflect and focus the rays at any given single position of the Sun in the sky. Those work!
Those are good answers. The Earth blocks meteor hits on the moon only slightly
