Telescopes: Crash Course Astronomy #6
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Date: 2022-04-04
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Comments and reviews: 9
Matt
Human eyes don't have a refresh rate, they don't observe at a global 14 frames a second. All human senses respond only to a change in stimuli, meaning that the image you see only changes when something within it changes. An individual cell on your retina will produce a signal to display a pixel essential only when the wavelength or intensity changes. This is why in darker, less contrasting or dynamic environments it's often observed that humans perceive a lower average refresh rate across the whole retina as opposed to a dynamic and constantly changing environment. Essentially, each cone and rod will refresh individually to the next cell and therefore there is both an unlimited length of exposure and 'frame rate' for any biological eye.
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Human eyes don't have a refresh rate, they don't observe at a global 14 frames a second. All human senses respond only to a change in stimuli, meaning that the image you see only changes when something within it changes. An individual cell on your retina will produce a signal to display a pixel essential only when the wavelength or intensity changes. This is why in darker, less contrasting or dynamic environments it's often observed that humans perceive a lower average refresh rate across the whole retina as opposed to a dynamic and constantly changing environment. Essentially, each cone and rod will refresh individually to the next cell and therefore there is both an unlimited length of exposure and 'frame rate' for any biological eye.
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Big
He's condescending as hell with a MY-GOD-YOU-SHOULD-ALREADY-KNOW-THIS attitude in documentaries, and only SLIGHTLY less so here. Sagan was passionate, with subpar interpersonal skills as well, except he was EXTREMELY respectful, even in odd situations, like his Johnny Carson interview (final interview before his death. I'm NOT saying Phil is dumb. because he's most certainly NOT. He is one of the smartest individuals around, his delivery just. sucks. Badly.
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He's condescending as hell with a MY-GOD-YOU-SHOULD-ALREADY-KNOW-THIS attitude in documentaries, and only SLIGHTLY less so here. Sagan was passionate, with subpar interpersonal skills as well, except he was EXTREMELY respectful, even in odd situations, like his Johnny Carson interview (final interview before his death. I'm NOT saying Phil is dumb. because he's most certainly NOT. He is one of the smartest individuals around, his delivery just. sucks. Badly.
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CircaTheFuture2
I spent almost an hour reading articles on how telescopes work and just couldn't wrap my head around it, and then this guy swoops in and I immediately understand it. His passion for astronomy is wonderful and the way he speaks and articulates ideas is perfect.
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I spent almost an hour reading articles on how telescopes work and just couldn't wrap my head around it, and then this guy swoops in and I immediately understand it. His passion for astronomy is wonderful and the way he speaks and articulates ideas is perfect.
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Dillon
I got me a small telescope a little over a year ago. It's a lot of fun. What is cool is actually seeing the objects in real life and not a picture of the internet, even though the hubble images are way better quality.
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I got me a small telescope a little over a year ago. It's a lot of fun. What is cool is actually seeing the objects in real life and not a picture of the internet, even though the hubble images are way better quality.
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M.
Your videos had given me amazing knowledges and experiences. Started watching this back then, now a medalist of IOAA (International Competition for Astronomy. All started from your videos. Thank you Phil, PBS, and teams.
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Your videos had given me amazing knowledges and experiences. Started watching this back then, now a medalist of IOAA (International Competition for Astronomy. All started from your videos. Thank you Phil, PBS, and teams.
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Morgan
-Aggressive self-marketing sometimes pays off. - So does ACTUALLY DOING THINGS!
Yeah, Galileo didn't invent the telescope. But I don't remember a lot of claims from him that he DID.
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-Aggressive self-marketing sometimes pays off. - So does ACTUALLY DOING THINGS!
Yeah, Galileo didn't invent the telescope. But I don't remember a lot of claims from him that he DID.
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Nitin
Would you plese tell more about the astronomers who found several facts without using any telescopes but were the pioneers in astronomy (like ancient Chinese, Indians, persians, etc?
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Would you plese tell more about the astronomers who found several facts without using any telescopes but were the pioneers in astronomy (like ancient Chinese, Indians, persians, etc?
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Om
What would you recommend for a star geek meaning I love star trek, star wars and stargate. Aka star geek who wants to be able to see very far away because we cant leave this rock.
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What would you recommend for a star geek meaning I love star trek, star wars and stargate. Aka star geek who wants to be able to see very far away because we cant leave this rock.
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I was so happy when I saw Venus and Mercury. Last year Mars was so luminous but this year 2019 and 2020, it is no where to be seen. Jupiter is there but not in the same spot.
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I was so happy when I saw Venus and Mercury. Last year Mars was so luminous but this year 2019 and 2020, it is no where to be seen. Jupiter is there but not in the same spot.
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