Recent content by Arfur Bryant

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    Undergrad Trying to Understand the Coriolis Effect: Why West-to-East Air Parcels Go South

    A.T. Ok, I used the wrong force in that aside. Thanks for the heads up.
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    Graduate Experiment Supporting/Falsifying Prevost's Theory of Heat Exchange

    Does anyone have a link to an experiment (preferably fairly modern) which either supports or falsifies Prevost's Theory of Heat Exchanges? Thanks.
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    Undergrad Trying to Understand the Coriolis Effect: Why West-to-East Air Parcels Go South

    A.T, Good point, I'll look at it. But isn't the fired shell subject to an acceleration (angular and vertical) due to the nature of the spinning sphere? Maybe its a combination of both...
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    Undergrad Trying to Understand the Coriolis Effect: Why West-to-East Air Parcels Go South

    Here is an attempt to visualise Coriolis Effect without using mathematics or a 2D graphic (because you really need 3D to get a proper idea). Remember the key things; 'Frame of Reference' and 'the Earth is a spinning sphere' (not a true sphere I know). Imagine a (really big) giant standing over...
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    Graduate Absorption of radiation from a 'cooler' source

    Guys, OK, thanks very much for your time. It has helped me a lot. Kind regards, AB
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    Graduate Absorption of radiation from a 'cooler' source

    Again, thank you for this. It was your term '...would burn hotter' that made me think you were saying the backradiation caused the filament to heat up. Interesting point though, now I think about it, but if AlephZero's numbers means the filament increases to 1010W (by absorbing the 10W...
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    Graduate Absorption of radiation from a 'cooler' source

    DaleSpam, Thank you for helping me to understand. However, if the filament burns hotter because it is cooling more slowly (your last sentence), then surely the backradiation has - in fact - heated the filament. Yes?
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    Graduate Absorption of radiation from a 'cooler' source

    AlephZero, First of all, thank you. I am getting closer to understanding this subject. To be pedantic, I still say the only 'thermal' energy is from the filament. The electrical source is not thermal energy. As for the equilibrium temperature, this goes back to my first post. Is the...
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    Graduate Absorption of radiation from a 'cooler' source

    AlephZero, I understand what you are saying. However, are you really sure that the filament of the fire gets hotter? That was my question. Because, if it does, then it appears to me that the 2nd Law of Thermodynamics has been broken. Remember that the only thermal energy in the room comes...
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    Graduate Absorption of radiation from a 'cooler' source

    Dalespam, Thank you for that reply. AB
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    Graduate Absorption of radiation from a 'cooler' source

    Factchecker, Can I have your opinion on this statement? (From hyper-physics) ["In the interaction of radiation with matter, if there is no pair of energy states such that the photon energy can elevate the system from the lower to the upper state, then the matter will be transparent to that...
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    Graduate Absorption of radiation from a 'cooler' source

    Did that. Not sure that it addresses the difference in wavelength though... AB
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    Graduate Absorption of radiation from a 'cooler' source

    It is clear apart from what you mean by 'absorbs'. Do you mean that it gains energy from this absorption? As you seem keen on a scenario, I will try to give one as specifically as I can... In a spacious closed room there is an electric (filament) fire. It is switched on and the electricity...
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    Graduate Absorption of radiation from a 'cooler' source

    Thank you UltrafastPED and Factchecker. I will look into that. AB
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    Graduate Absorption of radiation from a 'cooler' source

    Nugatory, That question did not come across as I intended. I meant no criticism, I am just curious what other mechanisms there may be. Regards, AB