silverfox Posted October 2, 2011 Share Posted October 2, 2011 I think you're mistaken on your second point Hal. The many-worlds interpretation of quantum mechanics is only concerned with a single universe, not multiple universes. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479280 Share on other sites More sharing options...
Huguenot Posted October 2, 2011 Share Posted October 2, 2011 That's not a logical interpretation of many-worlds theory silverfox.Many-worlds assumes that all possible realities co-exist but cannot interact. Since there is no statute of limitations on this theory, it is only safe to assume that it also includes the creation of multiple universes.In fact the 'Many-worlds' theory is used as an explanation for the 'anthropic principle' (that's the one that questions why it is that the universe in which we live is perfect for us to live here).i.e. 'Multiverses' is a subset of 'Many-worlds' Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479285 Share on other sites More sharing options...
HAL9000 Posted October 2, 2011 Share Posted October 2, 2011 silverfox - Apologies: M-Theory itself postulates the co-existence of multiple D-brane universes created when P-branes collide within a higher dimensional space thereby validating your original comment and rendering my interjection otiose. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479313 Share on other sites More sharing options...
Peckhamgatecrasher Posted October 2, 2011 Share Posted October 2, 2011 Trip to Tate Britain anyone? Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479390 Share on other sites More sharing options...
*Bob* Posted October 3, 2011 Share Posted October 3, 2011 Any wireless internet 'fans' here in the science room?Here's one that's been keeping me awake at night: is wireless at internet (at home) from a router to a receiving machine delivered 'in s straight line' from one to the other? Or does the router emit a sort-of magic data cloud which your machine can kind-of grab if it's nearby? Hope I'm putting this all the a proper science-like wording. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479465 Share on other sites More sharing options...
red devil Posted October 3, 2011 Share Posted October 3, 2011 Avoid sleepless nights *Bob* and instead just use the analogy of sex...one transmits and one receives Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479469 Share on other sites More sharing options...
*Bob* Posted October 3, 2011 Share Posted October 3, 2011 But there's definitely a clear line of sight when it comes to sex.. with another person at any rate. I mean it's not like you can pass your penis through a brick wall and into a waiting vagina (try as I might). Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479471 Share on other sites More sharing options...
red devil Posted October 3, 2011 Share Posted October 3, 2011 I take it you're not a frequenter of public toliets then... Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479474 Share on other sites More sharing options...
david_carnell Posted October 3, 2011 Share Posted October 3, 2011 Why, when mobile phones are now digital, can signals be on a gradient between excellent and poor?Surely either you have a signal or you don't with digital? Your reception should be either crystal clear or non-existent and yet this is clearly not the case. Kind regards,Confused of SE15. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479477 Share on other sites More sharing options...
mockney piers Posted October 3, 2011 Author Share Posted October 3, 2011 It's a magic data cloud of limited range, hence why your smart phone spends half its time pestering you that wifi is available as you wander down the street.Think of it as radio, mainly because that's exactly what it is. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479480 Share on other sites More sharing options...
mockney piers Posted October 3, 2011 Author Share Posted October 3, 2011 D_C the signal is digital but the means of transmission is still very much analogue and thus prone to degradation inteference and interruption by other signals, the atmosphere and things like walls. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479481 Share on other sites More sharing options...
*Bob* Posted October 3, 2011 Share Posted October 3, 2011 mockney piers Wrote:-------------------------------------------------------> It's a magic data cloud of limited range, hence> why your smart phone spends half its time> pestering you that wifi is available as you wander> down the street.If you had a thick brick wall which was, a few metres wide and high - and placed the router a few metres behind one side and the receiver a few behind the other, then the 'magic cloud' theory would surely mean that the reception would be similar with or without the brick wall?Only it isn't because the &&*^& things doesn't *&^*&^*& work. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479485 Share on other sites More sharing options...
Jeremy Posted October 3, 2011 Share Posted October 3, 2011 Bob - it's just radio waves, emitted in all directions. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479486 Share on other sites More sharing options...
red devil Posted October 3, 2011 Share Posted October 3, 2011 Maybe you're not shouting loud enough *Bob*...http://www.lusterstudios.com/images/allysonphilip/playing-telephone-tin-cans-string.jpg Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479491 Share on other sites More sharing options...
*Bob* Posted October 3, 2011 Share Posted October 3, 2011 I guess I'm just a little disappointed in 'the future', as it stands. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479492 Share on other sites More sharing options...
Jeremy Posted October 3, 2011 Share Posted October 3, 2011 david_carnell Wrote:-------------------------------------------------------> Surely either you have a signal or you don't with digital?> Your reception should be either crystal clear or non-existentThat's generally true with a digital signal, but that doesn't mean that your entire phone call is all-or-nothing. There are times when the audio will cut out entirely, but it shouldn't go weak/fuzzy/noisy.Like a digital TV hooked up to an indoor ariel... when reception isn't strong enough, you find out pretty abruptly, there's no sublte degradation in quality. Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479493 Share on other sites More sharing options...
mockney piers Posted October 3, 2011 Author Share Posted October 3, 2011 Sorry *Bob*. I'm afraid the magic cloud isn't so much the future as technology from 2 centuries ago!!Anyway this is nice in a sort o utterly useless way. But does explain why Huguenot's posts take about 4 days to reach here.http://www.submarinecablemap.com/ Link to comment https://www.eastdulwichforum.co.uk/topic/19696-the-lab-for-all-things-sciencey/page/3/#findComment-479511 Share on other sites More sharing options...
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