DoctorKarl
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how do cats purr? @ >sudden release of air>vibration (150-200Hz for 10-15ms>no vibration 30-40ms>vibration>repeat. 2)Dunno why.
about 1 hour ago
via web
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how do cats purr and why? @ 1)Book 24, Disinformation 2)narrow gap in vocal cords>+pressure in trachea 4cmH2O>sudden release ...
about 1 hour ago
via web
in reply to callie_simp
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are fish able to see at night? Do they have "night vision"? @ Some do, some don't - depends on their environment.
about 1 hour ago
via web
in reply to Ben_Mathie
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would humans be able to survive without a moon? @ Moon stabilises "tilt" of Earth. Without Moon, different evolutionary path?
about 1 hour ago
via web
in reply to Dustin_Diga13
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what makes popcorn pop? @ 1)Book 31, Brain Food 2)heat+H2O>steam pushes on tough "pericarp">pressure>release>carbs of corn expand
about 1 hour ago
via web
in reply to albert3801
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what causes a sunset to be so pink and red? Dust and gases in the atmosphere ? @ And also Rayleigh Scattering.
about 1 hour ago
via web
in reply to bryan1981
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does the sun rotate too? @ 25-35 days (or so, check Wiki for exact timing). Different at poles and equator.
about 2 hours ago
via web
in reply to ynotat
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@ what are the practical applications of ring theory in abstract algebra?
about 2 hours ago
via Twitter for iPhone
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moon moves away> tides go down> counters rising sea levels? @ Time scale for moon departure to reduce tides much longer than RSL.
about 2 hours ago
via web
in reply to josh_cx34
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Cancer is transferable in animals, any evidence of it being transferable in humans? @ Human Papilloma Virus, cervical Cancer
about 2 hours ago
via web
in reply to devilgotmywomen
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eating unpopped pop corn bad for you? @ 1)In "regular" amounts, fine so long as you chew them thoroughly. 2)Book 31, Brain Food
about 2 hours ago
via web
in reply to LukesThinking
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How can we watch TV lying our sides? @ Brain is very good at finding patterns, making adjustments, etc.
about 2 hours ago
via web
in reply to JimmyMac66
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possible to get copies of your first 3 books? I once owned them but they've been lost to ether @ One day, we'll get ebooks..
about 2 hours ago
via web
in reply to benofthewhite
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@ @ my friend is a physio, reckons you bugger the nerves in your hands before they get tougher
about 2 hours ago
via Twitter for iPhone
in reply to DoctorKarl
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why is the earths rotation slowing? @ Tides of water>friction>slowing>(balance angular momentum)>Moon retreats by 4 m/century
about 2 hours ago
via web
in reply to nastyassbass
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I love your books - they are always on Xmas list! But different style/layout of brain food harder to read.. Next 1 normal? @ Normal
about 2 hours ago
via web
in reply to margyman
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If I repeatedly hit stone, steel, and sandbags will my hands become stronger? @ Tougher not stronger, but only if you avoid damage.
about 2 hours ago
via web
in reply to BADALEX_
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why does the earth spin and what causes it? @ Left-over rotation from condensation from dust-gas cloud from which planets/sun came
about 2 hours ago
via web
in reply to JustJack72
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earth rotation speeding up or slowing? @ Has slowed by 1hr 45 min since 220 Million Years Ago, will continue to slow.
about 4 hours ago
via web
in reply to intertrees
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if I live on a farm and all my wood I burn in fire is my own, I'm carbon neutral tho? Particles vs CO2 @ @ Complicated
about 4 hours ago
via web
in reply to ImaWestie
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- Name Dr Karl
- Location Australia
- Web http://www.drkarl...
- Bio Dr Karl Kruszelnicki ~ an answer looking for a question. Dr Karl brings science to radio Thursdays on Triplej (1100-1200), and on BBC Radio 5 Live (0300-0400)
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