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    Astable and bistable

    Astable and bistable have been recently added in our syllabus. As a result it’s not in my textbook. My teacher did give a lecture on it but unfortunately I didn’t get a single thing... Can you guys please give a link to some site(s) which give(s) a good introduction to the Astable and bistable...
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    Persistence of vision

    I know it is used to refer to the property of brain/eye that it takes them one-tenth of a second to process a new image after processing one but I just cant figure out how does a movie camera takes advantage of it and fool our brain so that it thinks that its waching a smooth motion though i...
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    A little help pls

    I think the weight of the door gives rise to a clockwise moment about the lower hinge. The upper hinge therefore must apply some force to keep the door in place. Due to this if the the door is too heavy the screws of the upper hinge get ripped off.
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    Is the distance between a trough and crest one wavelength?

    Yeah I was thinking the samething when I first read it. Its the distance beteen two consecutive crest or troughs.
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    Brightness of a Bulb

    Well thanks for your reply but I'm afraid I didnt get a single thing. Can you please explain this in simple 10th grade physics. My teacher said the same thing. He proved it by using the equation P=V^2/R (where, I believe, P is rate of dissipation of energy). So does it mean the tungsten...
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    Brightness of a Bulb

    We have two bulbs, X and Y. Y has thinner and longer filament than X. When connected to a power supply which bulb will give out most light and why? I think the answer should be Y as it has heigher resistance and therefore will dissipate more energy. Thanks in advance. :approve: