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| === The Journey to Quantum Gravity === == Carlo Rovelli 2017 . Cedar Mill 503.143 == |
== The Journey to Quantum Gravity == === Carlo Rovelli 2017 . Cedar Mill 503.143 === |
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| Idea is that spacetime is quantized, connection graphs between nodes at Planck scale. "Big bang" is "big bounce" |
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| .p182 "time does not exist" at the Planck scale, time is relational at large scale | |
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| . graph vs. k,,(co-moving),, which ranges from 0 to 20 . A. Ashtekar, I. Agullo, W. Nelson ... probably fig. 1 of [[ [[ https://arxiv.org/pdf/1209.1609 | Quantum gravity extension of the inflationary scenario, 2012 ]] |
. graph vs. k,,(co-moving),, which ranges from 0 to 20 ... and what is k,,(co-moving),,? . A. Ashtekar, I. Agullo, W. Nelson ... probably fig. 1 of [[ https://arxiv.org/pdf/1209.1609 | Quantum gravity extension of the inflationary scenario]] , 2012 ------ == Seven Brief Lessons on Physics == === Hillsboro 530 Rovelli 2016 === ----- Quick fluff ... page 48 shows "bounce" from prior phase. Would that bounce homogenize the universe ... instead of inflation? ------ === There Are Places in the World Where Rules Are Less Important Than Kindness === === West Slope Library 500 Rovelli 2018 === ---- Sorta interesting essays, literary mostly . Aristotle the Scientist; not as wrong as Galileo's attacks. Light objects ''do'' fall slower ... in air . Vladimir Nabokov, Lolita and lepedopterist . Newton's alchemy - notes but not publication. Not secrets, instead nothing found convincing . Copernicus / 1977 youth movement / Brecht Galileo / Dante universe model / Statistical Outliers . [[ https://en.wikipedia.org/wiki/Bruno_de_Finetti | Bruno de Finetti ]] subjective probability . Does Science Need Philosophy? ''dismissing philosophy is not science, but philosophy'' . [[ https://en.wikipedia.org/wiki/Other_Minds:_The_Octopus,_the_Sea,_and_the_Deep_Origins_of_Consciousness | Other Minds ]] (Octopus) . Chandrasekhar, hard work more important than intelligence . When Einstein learned of his errors, he changed his mind . Archimedes "The Sand Reckoner", method to express very large numbers (largest named number was myriad, 10,000 . Inequality, Rousseau / Ancient Wars / Politics / National Identity / Darwin / Curie . Lemaître ... cosmology closest to religion . [[ https://en.wikipedia.org/wiki/Giacomo_Leopardi | Giacomo Leopardi ]] wrote History of Astronomy age 15, poet . Lucretius ''De rerum natura'' | [[ https://en.wikipedia.org/wiki/David_Lewis_(philosopher) | David Lewis ]], plurality of worlds |
Reality is Not What It Seems
The Journey to Quantum Gravity
Carlo Rovelli 2017 . Cedar Mill 503.143
Author of "Seven Brief Lessons on Physics"
Idea is that spacetime is quantized, connection graphs between nodes at Planck scale. "Big bang" is "big bounce"
- p059 Maxwell's equations: dF = 0, d*F = J (?? divergence and curl of "field" ?? )
p157 John Wheeler audio
- p182 "time does not exist" at the Planck scale, time is relational at large scale
- p220 Possible loop quantum gravity prediction of background radiation spectrum
graph vs. k(co-moving) which ranges from 0 to 20 ... and what is k(co-moving)?
A. Ashtekar, I. Agullo, W. Nelson ... probably fig. 1 of Quantum gravity extension of the inflationary scenario , 2012
Seven Brief Lessons on Physics
Hillsboro 530 Rovelli 2016
Quick fluff ... page 48 shows "bounce" from prior phase. Would that bounce homogenize the universe ... instead of inflation?
There Are Places in the World Where Rules Are Less Important Than Kindness
West Slope Library 500 Rovelli 2018
Sorta interesting essays, literary mostly
Aristotle the Scientist; not as wrong as Galileo's attacks. Light objects do fall slower ... in air
- Vladimir Nabokov, Lolita and lepedopterist
- Newton's alchemy - notes but not publication. Not secrets, instead nothing found convincing
- Copernicus / 1977 youth movement / Brecht Galileo / Dante universe model / Statistical Outliers
Bruno de Finetti subjective probability
Does Science Need Philosophy? dismissing philosophy is not science, but philosophy
Other Minds (Octopus)
- Chandrasekhar, hard work more important than intelligence
- When Einstein learned of his errors, he changed his mind
- Archimedes "The Sand Reckoner", method to express very large numbers (largest named number was myriad, 10,000
- Inequality, Rousseau / Ancient Wars / Politics / National Identity / Darwin / Curie
- Lemaître ... cosmology closest to religion
Giacomo Leopardi wrote History of Astronomy age 15, poet
Lucretius De rerum natura | David Lewis, plurality of worlds