I want to design a fire alarm for people who are both deaf and blind for my school project. It will contain a bimetallic strip which expands and closes the circuit when it feels heat. I will then connector a buzzer vibrator, so the client can feel it. But my question is, will my client feel the heat himself before my device even detects it? Is my design feasible?
Actually lightning is strong enough to pass our roof but lightning can attract from electronics devices or metal.
The answer is in the Einstein field equations. Quite simply, matter tells space time how much it should curve and the curvature of space time tells mass how it should move. The Earth curves spacetime and matter follows the curvature. Space time is a geometrical explanation. There is no such thing as a gravitational force, at least not in the Newtonian sense. Einstein's theory is known as a kinematic theory, rather than a dynamic theory. Kinematic relates to geometry. Matter on the surface of the Earth follows the curvature. It's easy to think that two planets of the same size but different mass will curve space time by the same amount - that is the curvature of space time is simply related to absolute geometrical parameters, but it is not that simple. The Einstein field equations are consistent with greater mass - greater curvature. To begin to understand Einstein's general theory, and what it means, then begin reading about the principle of equivalence.
