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| 03:01 AM | ||
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| 03:01 AM | ||
If a flashlight w/ the same size, brightness and distance of the sun shone from the sky, would it illuminate the earth? | |
| Anonymous Coward User ID: 73919674  France12/19/2017 01:33 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 26114015  United States12/19/2017 01:38 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward (OP) User ID: 73919674 France12/19/2017 01:41 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 26114015 United States12/19/2017 01:44 PM Report Abusive Post Report Copyright Violation | Re: If a flashlight w/ the same size, brightness and distance of the sun shone from the sky, would it illuminate the earth? .........so even though a sq metre of the suns surface, becomes equivalent to 48,000 sq metres at the distance of the earth. and hence the energy received pr sq m is diluted by a factor of 48,000. That energy results in a temp proportional to it's 4th root - which is still enough, after allowing for albedo and curvature to produce temps of 300k or so. Quoting: Johnny Be Good ============================================================= RESPONSE=====I did a bit of math to arrive at an area on the sun of 1025 sq miles (about the size of Long Island in the US(1400 sq miles)) being the portion which radiates onto the surface of the earth 93 million miles away per your 48,000 times multiplier. Hard for me to believe that the small area of Long Island so far away could warm the entire earth as it is said that it does. Wonder what portion of earth's current temp is internally derived? |
| Anonymous Coward (OP) User ID: 73919674 France12/19/2017 02:07 PM Report Abusive Post Report Copyright Violation | Re: If a flashlight w/ the same size, brightness and distance of the sun shone from the sky, would it illuminate the earth? It is the high Temp of the suns surface (5,800 Kelvin) that emits energy proportional to it's 4th power! Quoting: Anonymous Coward 26114015 .........so even though a sq metre of the suns surface, becomes equivalent to 48,000 sq metres at the distance of the earth. and hence the energy received pr sq m is diluted by a factor of 48,000. That energy results in a temp proportional to it's 4th root - which is still enough, after allowing for albedo and curvature to produce temps of 300k or so. Quoting: Johnny Be Good ============================================================= RESPONSE=====I did a bit of math to arrive at an area on the sun of 1025 sq miles (about the size of Long Island in the US(1400 sq miles)) being the portion which radiates onto the surface of the earth 93 million miles away per your 48,000 times multiplier. Hard for me to believe that the small area of Long Island so far away could warm the entire earth as it is said that it does. Wonder what portion of earth's current temp is internally derived? It's more the amount of energies of the sun's corona which is far hotter than the surface of the sun, to use the traditional understanding of its temperature. Funny though that you should ask that question at the end, because I noticed here that the temperature at night just a few days ago warmed without any incoming wind that I could detect. |
| Anonymous Coward User ID: 58071649 United States12/19/2017 02:44 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 26114015 United States12/19/2017 07:16 PM Report Abusive Post Report Copyright Violation | Re: If a flashlight w/ the same size, brightness and distance of the sun shone from the sky, would it illuminate the earth? It is the high Temp of the suns surface (5,800 Kelvin) that emits energy proportional to it's 4th power! Quoting: Anonymous Coward 26114015 .........so even though a sq metre of the suns surface, becomes equivalent to 48,000 sq metres at the distance of the earth. and hence the energy received pr sq m is diluted by a factor of 48,000. That energy results in a temp proportional to it's 4th root - which is still enough, after allowing for albedo and curvature to produce temps of 300k or so. Quoting: Johnny Be Good ============================================================= RESPONSE=====I did a bit of math to arrive at an area on the sun of 1025 sq miles (about the size of Long Island in the US(1400 sq miles)) being the portion which radiates onto the surface of the earth 93 million miles away per your 48,000 times multiplier. Hard for me to believe that the small area of Long Island so far away could warm the entire earth as it is said that it does. Wonder what portion of earth's current temp is internally derived? It's more the amount of energies of the sun's corona which is far hotter than the surface of the sun, to use the traditional understanding of its temperature. Funny though that you should ask that question at the end, because I noticed here that the temperature at night just a few days ago warmed without any incoming wind that I could detect. I did not know that the sun's corona was so much hotter than the surface of the sun, Thanks. And I do wonder what the earth's temp would become with no sun, being heated only from the core's retained heat and nuclear element decay. |
| Anonymous Coward User ID: 76010602 United States12/19/2017 07:56 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 28369796 United States12/19/2017 08:14 PM Report Abusive Post Report Copyright Violation | |
| Anonymous Coward User ID: 77954695 United States11/13/2019 09:52 AM Report Abusive Post Report Copyright Violation | Re: If a flashlight w/ the same size, brightness and distance of the sun shone from the sky, would it illuminate the earth? It is the high Temp of the suns surface (5,800 Kelvin) that emits energy proportional to it's 4th power! Quoting: Anonymous Coward 26114015 .........so even though a sq metre of the suns surface, becomes equivalent to 48,000 sq metres at the distance of the earth. and hence the energy received pr sq m is diluted by a factor of 48,000. That energy results in a temp proportional to it's 4th root - which is still enough, after allowing for albedo and curvature to produce temps of 300k or so. Quoting: Johnny Be Good ============================================================= RESPONSE=====I did a bit of math to arrive at an area on the sun of 1025 sq miles (about the size of Long Island in the US(1400 sq miles)) being the portion which radiates onto the surface of the earth 93 million miles away per your 48,000 times multiplier. Hard for me to believe that the small area of Long Island so far away could warm the entire earth as it is said that it does. Wonder what portion of earth's current temp is internally derived? It's more the amount of energies of the sun's corona which is far hotter than the surface of the sun, to use the traditional understanding of its temperature. Funny though that you should ask that question at the end, because I noticed here that the temperature at night just a few days ago warmed without any incoming wind that I could detect. |
| Anonymous Coward User ID: 77331063 United States11/13/2019 09:55 AM Report Abusive Post Report Copyright Violation | |
Emerald_Glow 2.0
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when retards theorize ...