tag:blogger.com,1999:blog-1592992209402300549.post7398483209132194402..comments2024-03-29T07:33:41.566-04:00Comments on The Silicon Graybeard: 107 Year Old Einstein Prediction Proven SiGraybeardhttp://www.blogger.com/profile/00280583031339062059noreply@blogger.comBlogger7125tag:blogger.com,1999:blog-1592992209402300549.post-46219330614378278292018-07-15T10:47:48.909-04:002018-07-15T10:47:48.909-04:00Oh, and the way I heard it was, "the differen...Oh, and the way I heard it was, "the difference between theory and practice in practice is greater than the difference between theory and practice in theory".<br /><br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-34404488512469738592018-07-15T10:44:49.561-04:002018-07-15T10:44:49.561-04:00The observation about measurement accuracy and sig...The observation about measurement accuracy and signal to noise ratio is a really important one, and may summarize the results in just one line. They were apparently comparing predictions from a model that just included atomic vibrations and were able to see a difference between predicted and observed heat flow that might have been too small to detect before this. <br /><br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-26305447507629854382018-07-15T01:20:45.930-04:002018-07-15T01:20:45.930-04:00"In theory, there's no difference between..."In theory, there's no difference between theory and practice. In practice there is a difference." (Or something to that effect.) Yogi Berra.Zendo Debhttps://www.blogger.com/profile/00094772654735415974noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-56380460853141405192018-07-15T01:19:07.159-04:002018-07-15T01:19:07.159-04:00Sometimes it is just a question of our not being a...Sometimes it is just a question of our not being able to measure something with enough accuracy. "We think this is what we are seeing..." but it either lost in electrical noise in the measuring apparatus, or it falls within confidence bands.<br /><br />LIGO had a lot trouble with this and had to go through at least 1 major upgrade - not including the 30 or 40 years of prototypes before they could see a signal not lost in the noise of the apparatus itself.<br /><br />The final experiment to prove/disprove the existence of the luminiferous aether was done sometime in the late 1950s or 1960s, because before that we couldn't measure stuff accurately enough. This is even though the theoreticians stopped worrying about it in the 1890s.Zendo Debhttps://www.blogger.com/profile/00094772654735415974noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-23568691438261180392018-07-14T18:37:55.666-04:002018-07-14T18:37:55.666-04:00Most interesting.Most interesting.LLhttps://www.blogger.com/profile/05538854359365988863noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-54344330307278663542018-07-14T10:11:52.113-04:002018-07-14T10:11:52.113-04:00My thermodynamics class was too bogged down in ste...My thermodynamics class was too bogged down in steam tables to talk about anything interesting like this. As I recall decades later. <br /><br />It seems to me almost like a quantum effect, and I was mostly surprised that this appears to be a new experimental verification. A cursory search didn't turn this up, but I'm honestly not convinced it's the first time the effect has been seen. It was, though, the most interesting tech/science story I had in the stack. <br /><br />SiGraybeardhttps://www.blogger.com/profile/00280583031339062059noreply@blogger.comtag:blogger.com,1999:blog-1592992209402300549.post-60119928266986618842018-07-13T23:46:17.366-04:002018-07-13T23:46:17.366-04:00I may have missed this subtle detail in thermodyna...I may have missed this subtle detail in thermodynamics and nuke physics classes ... or more likely suffered a lack of thorough understanding ... but this model is how I always thought of heat transfer at the atomic lattice scale - both transfer by vibration (conduction/diffusion) and "random" transfer of energy (low freq photons in wave mode - basic diffusion analysis not being totally sufficient at lattice scale).<br /><br />Or perhaps I unconsciously assumed the Einstein theory was correct and I didn't realize the theory hadn't been verified.<br /><br />The more I study, the less I know. The less I know, the more I want to study.<br /> <br />QAnonymousnoreply@blogger.com