Surely there is a lot of infrared light (black body and other) around at all times, how does the sensor differentiate this ambient light from the remote signal? Also, how is it that I don't need to point my remote directly at the sensor, I can have the remote in a bookshelf pointed away from the sensor and the remote still works. Are most materials highly reflective at these wavelengths?
i have had several root canals and not a bit of pain it is not any worse than getting a filling. They give you Novocain and drill a small hole to the root. Once they drill through the root, all pain (previous to the dentist visit) and discomfort will be gone.
The larger the pipe the lower the losses. Thus it becomes an economic decision. The pipe and fittings will need to withstand significant pressure (well over 400 psi) with a 340 m head. Since your flow rate will be around 140 GPM I would suggest calculating the loss in a 3 inch pipe then determine if the extra cost of larger pipe offsets the added power required. Remember, the 37 hp assumes no losses (very large pipe).
