I NEED HELP ASAP!!! Why did the knights create designs on their shields in midieval times?
heat is a from of IR radiation. you can build one using photdiodes. photo diodes come in many varieties dpending on the radiation spectrum freqency for which they are sensitive. if you want your device to sense heat from human beings you will have to use photo diodes that are sensitive to a particular range of frequence which is the range in which the human body emits heat radiation. to construct one i think you will also need a microcontrller to take the appropriate action with the current coming form the photo diode.
Our generation is slowly becoming more judgmental and everybody is bandwagoning and everyone wants what is cool like Hollister (in my area). Everyone basically just wants to fit in so they buy the most expensive of clothing so they can brag to other people on how cool they think they are
Do you have extra insurance on your house for appliances? The gas company is not going to replace it. Is there anyway you can get a home equity loan? We are going to have to get a new furnace next season. I got an estimate of $2600.00.
