We have 4 smoke detectors in our house. We had a fire Sunday morning. We all suffered from varying degrees of smoke inhalation. None of the 4 detectors went off. The smoke was so thick you could not see 3 feet in front of you. We have since tested all the detectors and they all test fine. Is smoke from an oil furnace fire somehow different? Every time my husband cooks they go off. We are having professional cleaners come in to clean the house of black soot but I am very bothered by the fact that they never worked when we needed them too.
ok so you lay your body down on the ground, and just lay under the sun.
Unfortunately not, you need a certain distance to allow the the image to be collected (thermal detectors) as the heat needs to be amplfied. Also, the resolution is terible and nothing can be seen in the distance. Better version (photon detectors) can get better resolution and look out past 2km (there are ones at 5km). These require cooling so that the photons coming from the object have very little energy and can only be detected on extremly cold surfaces. Even satielites can only get a 1m resolution by being cooled by space, in their case they are restricted by the size on the wavelength hiting the pixel. This is all geeky stuff, lots of physics involved in proving movies wrong. Probably wont change in the future, almost reached the limit physics will allow. Next step is making smaller cooling units/better power.
It depends how long for and the the horse. Too much trotting on the roads can cause damage due to the concussion from trotting on the hard surface however a little can help to strengthen the legs so done in moderation and properly built up to it's ok but not for a long period of time.
