Origins Quest
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  • The First Three Days of the Earth
    • Reconciling Science and the Bible >
      • Precise Science Confirms the Bible
      • Moses Foresaw Three Discoveries >
        • First Discovery >
          • Mass and Weight of Energy
          • Transformations and Materialization
          • Different Kinds of Rays and Materialization in Empty Space
          • Was Energy the Source of Material
        • Second Discovery
        • Third Discovery >
          • The First Light
          • Separating Light from Darkness
        • Early Ideas about the Beginning
        • An Up-to-Date Ancient Cosmology
        • The Confirmation
        • A Challenging Question
      • Cycles of Darkness and Light >
        • Teaching Children
        • The Idea the Word “Day” Expresses >
          • A Day Not The First Day
          • Not Literal 24-Hour Days
        • How Long Did the First Three Days Last?
        • Earth Rotation and the First Two Days
        • The Duration of the First Day
        • The First Three Cycles of Darkness and Light
      • Was There a Beginning? >
        • An Uncreated Unchanging Universe
        • Evidence for a Beginning >
          • Elements in the Stars
          • Natural Radiation from Space
          • Stars Consume Their Fuel
        • Cosmology and Relativity
        • Instability Determinism Uncertainty, Predestination >
          • Instability
          • Stability and Determinism
          • Predestination Indeterminacy Uncertainty
        • Einstein Science and Philosophy
        • Predestination versus Timely Intervention
    • Simple Elements and Morning Stars >
      • First Evening Energy and Particles >
        • The Energy of Different Kinds of Rays
        • The Most Energetic Rays
        • Natural Particle Production >
          • Simulating the Process
          • Particles from Darkness
        • Darkness in the Bible >
          • Why Darkness Comes First
          • Isaiah on Darkness and Light
      • First Morning-Simple Elements >
        • Doppler Shift Expansion and Cooling >
          • The Beginning of Nucleosynthesis
          • Four Forces
          • Forces Present in Empty Space
        • Nucleosynthesis >
          • The First Elements
          • The First Halt in Nuclei Production
          • Insufficient Complexity
        • The First Light Was Good >
          • The Immediate Cause of the First Light
          • Forming the Light
          • The Confirmation of Darkness and Light
    • Stars that Formed Complex Elements >
      • Second Evening-Expansion >
        • The Expanding Universe >
          • The Giant Atom that Exploded
          • Expansion Not a Big Bang Explosion
          • Expansion Preserves Order
        • Expanding Now But Later What? >
          • Expanding but Uncreated
          • Continuous Creation
          • The Cyclic Version of Continuous Creation
        • The Expanding Universe Prevails
      • Second Morning-Heavy Elements >
        • Heat and Light Make Heavy Elements >
          • Differences in Stellar Composition
          • Nuclear Binding Energy
        • Energy from Fusion and Fission >
          • The Proton-Proton Reaction
          • Nuclear Stability
        • Different Kinds of Fission
        • Burning Helium and Heavier Elements
    • Forming the Sun and Earth >
      • Third Evening-A Dusty Yellow Star >
        • Supernovas Begin the Third Evening
        • Extraterrestrial Water
        • Lighting the Sun
        • The Carbon to Oxygen Reaction
        • The Darkness of the Third Evening
      • Third Morning-The Earth Forms >
        • The Search for a Planet Suitable for Life
    • How Does God Create? >
      • Conditions at the Very Beginning >
        • Creation from Nothing
        • Can We Create Energy? >
          • God Works to Create Energy
          • The Work Necessary to Create the Universe
        • Denial of Creation
        • The Simplest Explanation
        • Creation in a Singularity >
          • Can We Investigate the Instant of Creation?
          • The First Light Has Fluctuations
      • The Next Three Days >
        • Structure in the Genesis Narrative >
          • Examples of Parallelism
          • Parallel Structure in the Creation Narrative
        • Day Four >
          • Not All Stars Formed on the Fourth Day
          • When Did the Stars and Sun Start to Shine?
          • Signs for Animals and People
      • What Is the Origin of the Universe?
    • Appendices >
      • Appendix A
      • Appendix B
  • Design or Luck?
    • Creative Design >
      • Darwin and Adaptive Variation >
        • Finches and Form Adaptation
        • Adaptive Behavior and Structure
        • Intelligence and Autonomy
      • Biological Structure and Reproduction
      • Adaptive Form
      • Darwin and Darwinism >
        • The Development of the Sciences
        • Contrasting Darwinism and Thermodynamics
        • Darwinism Today
      • The Limits of Automatic Design
    • Why Are Not All Darwinists Rich? >
      • Automatic Design: Artificial and Natural >
        • The Automatic Lens-Design Program
        • Company Top Secret
        • Comparing Evolution and Lens Design
        • My Colleagues Reacted
      • Conclusion-Darwinism Does Not Work >
        • Can Design Be Automatic?
        • Darwinism and Automatic Design
      • How Far Can Small Steps Take Us? >
        • Small Improvements Are Merely Engineering
        • The Vastness of Hyperspace
        • Primordial Alphabet Soup >
          • Wide Coding Overcomes Noise
          • DNA is a Natural Language
          • Common Ancestry
          • Accepted Words Span the Space
        • Is Creative Design Consistent with Darwinism? >
          • Engineering Design
          • A Challenge for Darwinists
    • Thermodynamics >
      • Thermodynamics Information and Creation >
        • The First Law of Thermodynamics
        • The Second Law of Thermodynamics >
          • Entropy
          • Perpetual Motion
        • Information and Order >
          • Entropy Probability and Information
          • Multiplying Probability and Adding Entropy
          • Probability and Information
        • Structure Design Intelligence and Creativity >
          • Structure and Breakdown--Death and Decay
          • Perfection and Beauty
      • Earth-Sun Thermodynamics >
        • A Simple Example of a Thermodynamic Process
        • The Example Applied to the Sun and Earth
      • Another Error about Thermodynamics >
        • A Darwinist Argument about Thermodynamics
        • Sunlight and Earth Temperature
        • What Makes Sunlight Suitable?
      • The Night Sky Is Dark >
        • Olbers and his Paradox
        • A Black Forest and the Stars >
          • Seeing to the Far Limit of the Universe
          • The Limit of the Known Universe
          • Ordinary Darkness
      • A Planet Suitable for Life
      • The Thermodynamics of Life >
        • Living Organisms and Heat Engines >
          • The Thermodynamics of Life without Sunlight
        • Entropy Thermodynamics and Prigogine >
          • Darwinism and Thermodynamics
      • Thermodynamics and the Universe >
        • Formless and Dark but Energetic and Orderly >
          • Entropy and Penrose
        • Creative Agencies and Their Characteristics
    • Complex Order-Life-Intelligence >
      • Random Action and Complexity
      • Does Matter Organize Itself?
      • Complexity Can Be Specified
      • Information and Physical Laws
      • Did Our Life Begin Elsewhere?
      • Discovering Alien Life Will Change Nothing
      • Creative Design Suits the Universe for Life
    • The Quest Continues
  • Creationism that Scientists Can Accept
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Sunlight and the Earth’s Temperature

Now let’s get back to science. Energy flows onto the Earth from the Sun, and energy is essential for life. Yet energy also flows out from the Earth to the cold of outer space. The inflow of energy from the Sun is actually slightly less than the outflow of energy from the Earth, because some of the outflow is heat escaping from the Earth’s interior. If the inflow were always even slightly greater than the outflow, the Earth’s temperature would rise without limit.

We may calculate the Earth’s temperature from the solar surface temperature and the amount of sky the Sun occupies. The Sun’s absolute surface temperature is about 6 000 kelvins.

The Sun’s disk as seen from the Earth has an angular diameter of about half of one degree or 30 minutes of arc. Consider a map of the sky. The equator is 360 degrees around. Therefore 720 suns would fit on the equator with the edges of one touching the edges of the suns on either side. Then it is 90 degrees from the equator to the North Pole, and another 90 degrees to the South Pole. Therefore 360 suns would fit on a longitude line in the sky. The product of 360 and 720 is 259 200. That is more than the number of suns it would take to fill up the sky, because the latitude circles get smaller as one approaches the poles. On the other hand, once the sky was full of suns with their edges touching, one would need to cut up additional suns to fill in the spaces between the circles. It takes calculus to work this out precisely. The sky would be packed full with 210 000 suns. Under such conditions the Earth would have the same temperature as the surface of the Sun, 6 000 kelvins. Even a few extra suns, let alone 210 000 of them, would make the Earth intolerably hot. Happily for us there is only one Sun.

Outer space has an absolute temperature of less than 3 kelvins. This temperature is so low it may be taken as zero for the purposes of our calculation. Radiant energy flow is proportional to the fourth power of the absolute temperature, that is, to the square of the square of the absolute temperature. The total inflow has to be averaged over the whole sky. The main inflow is from the Sun. The remaining inflow from all the stars and planets in the rest of the sky is practically zero. The average inflow is therefore 6 000 kelvins squared and squared again, divided by 210 000. The average outflow is almost equal to the average inflow. Therefore the Earth’s temperature is the square root of the square root of the average inflow. We can simplify the calculation if we use the square root of the square root of 210 000, which is equal to 21.4. Then if we divide 6 000 kelvins by 21.4, the result we get is 280 kelvins. Subtracting 273º C from this, we get the Earth’s average temperature as 7º C or 45º F. That is a bit chilly but not freezing. Since the average Earth temperature is a little higher than this, some of the Earth’s warmth must still be coming from its internal heat. Besides the inflow of heat from the Sun, radioactive materials in the Earth’s core disintegrate and produce additional internal heat, which eventually flows out into space. The Earth’s core is not as hot as the interior of a star, so the core cannot synthesize new radioactive materials. The disintegration is irreversible and contributes continually to the Earth’s increasing entropy.

The Earth absorbs sunlight a little better than it emits heat, because of the greenhouse effect of the atmosphere. That raises the Earth’s temperature slightly.

The foregoing is an equilibrium calculation. If all the incoming energy from the Sun flowed away immediately to the rest of the universe, there would be no change of entropy on the Earth. In perfect balance the net inflow of heat would be zero, so the change in entropy would also be zero. However, some of the Sun’s heat drives winds and makes turbulence in the Earth’s atmosphere. The winds sandblast the mountains and also bring rains that wear the mountains down. No one can ever exactly reverse the random irregularities of turbulent flow. These two processes are therefore irreversible.

What Makes Sunlight Suitable?
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  • Home
  • The First Three Days of the Earth
    • Reconciling Science and the Bible >
      • Precise Science Confirms the Bible
      • Moses Foresaw Three Discoveries >
        • First Discovery >
          • Mass and Weight of Energy
          • Transformations and Materialization
          • Different Kinds of Rays and Materialization in Empty Space
          • Was Energy the Source of Material
        • Second Discovery
        • Third Discovery >
          • The First Light
          • Separating Light from Darkness
        • Early Ideas about the Beginning
        • An Up-to-Date Ancient Cosmology
        • The Confirmation
        • A Challenging Question
      • Cycles of Darkness and Light >
        • Teaching Children
        • The Idea the Word “Day” Expresses >
          • A Day Not The First Day
          • Not Literal 24-Hour Days
        • How Long Did the First Three Days Last?
        • Earth Rotation and the First Two Days
        • The Duration of the First Day
        • The First Three Cycles of Darkness and Light
      • Was There a Beginning? >
        • An Uncreated Unchanging Universe
        • Evidence for a Beginning >
          • Elements in the Stars
          • Natural Radiation from Space
          • Stars Consume Their Fuel
        • Cosmology and Relativity
        • Instability Determinism Uncertainty, Predestination >
          • Instability
          • Stability and Determinism
          • Predestination Indeterminacy Uncertainty
        • Einstein Science and Philosophy
        • Predestination versus Timely Intervention
    • Simple Elements and Morning Stars >
      • First Evening Energy and Particles >
        • The Energy of Different Kinds of Rays
        • The Most Energetic Rays
        • Natural Particle Production >
          • Simulating the Process
          • Particles from Darkness
        • Darkness in the Bible >
          • Why Darkness Comes First
          • Isaiah on Darkness and Light
      • First Morning-Simple Elements >
        • Doppler Shift Expansion and Cooling >
          • The Beginning of Nucleosynthesis
          • Four Forces
          • Forces Present in Empty Space
        • Nucleosynthesis >
          • The First Elements
          • The First Halt in Nuclei Production
          • Insufficient Complexity
        • The First Light Was Good >
          • The Immediate Cause of the First Light
          • Forming the Light
          • The Confirmation of Darkness and Light
    • Stars that Formed Complex Elements >
      • Second Evening-Expansion >
        • The Expanding Universe >
          • The Giant Atom that Exploded
          • Expansion Not a Big Bang Explosion
          • Expansion Preserves Order
        • Expanding Now But Later What? >
          • Expanding but Uncreated
          • Continuous Creation
          • The Cyclic Version of Continuous Creation
        • The Expanding Universe Prevails
      • Second Morning-Heavy Elements >
        • Heat and Light Make Heavy Elements >
          • Differences in Stellar Composition
          • Nuclear Binding Energy
        • Energy from Fusion and Fission >
          • The Proton-Proton Reaction
          • Nuclear Stability
        • Different Kinds of Fission
        • Burning Helium and Heavier Elements
    • Forming the Sun and Earth >
      • Third Evening-A Dusty Yellow Star >
        • Supernovas Begin the Third Evening
        • Extraterrestrial Water
        • Lighting the Sun
        • The Carbon to Oxygen Reaction
        • The Darkness of the Third Evening
      • Third Morning-The Earth Forms >
        • The Search for a Planet Suitable for Life
    • How Does God Create? >
      • Conditions at the Very Beginning >
        • Creation from Nothing
        • Can We Create Energy? >
          • God Works to Create Energy
          • The Work Necessary to Create the Universe
        • Denial of Creation
        • The Simplest Explanation
        • Creation in a Singularity >
          • Can We Investigate the Instant of Creation?
          • The First Light Has Fluctuations
      • The Next Three Days >
        • Structure in the Genesis Narrative >
          • Examples of Parallelism
          • Parallel Structure in the Creation Narrative
        • Day Four >
          • Not All Stars Formed on the Fourth Day
          • When Did the Stars and Sun Start to Shine?
          • Signs for Animals and People
      • What Is the Origin of the Universe?
    • Appendices >
      • Appendix A
      • Appendix B
  • Design or Luck?
    • Creative Design >
      • Darwin and Adaptive Variation >
        • Finches and Form Adaptation
        • Adaptive Behavior and Structure
        • Intelligence and Autonomy
      • Biological Structure and Reproduction
      • Adaptive Form
      • Darwin and Darwinism >
        • The Development of the Sciences
        • Contrasting Darwinism and Thermodynamics
        • Darwinism Today
      • The Limits of Automatic Design
    • Why Are Not All Darwinists Rich? >
      • Automatic Design: Artificial and Natural >
        • The Automatic Lens-Design Program
        • Company Top Secret
        • Comparing Evolution and Lens Design
        • My Colleagues Reacted
      • Conclusion-Darwinism Does Not Work >
        • Can Design Be Automatic?
        • Darwinism and Automatic Design
      • How Far Can Small Steps Take Us? >
        • Small Improvements Are Merely Engineering
        • The Vastness of Hyperspace
        • Primordial Alphabet Soup >
          • Wide Coding Overcomes Noise
          • DNA is a Natural Language
          • Common Ancestry
          • Accepted Words Span the Space
        • Is Creative Design Consistent with Darwinism? >
          • Engineering Design
          • A Challenge for Darwinists
    • Thermodynamics >
      • Thermodynamics Information and Creation >
        • The First Law of Thermodynamics
        • The Second Law of Thermodynamics >
          • Entropy
          • Perpetual Motion
        • Information and Order >
          • Entropy Probability and Information
          • Multiplying Probability and Adding Entropy
          • Probability and Information
        • Structure Design Intelligence and Creativity >
          • Structure and Breakdown--Death and Decay
          • Perfection and Beauty
      • Earth-Sun Thermodynamics >
        • A Simple Example of a Thermodynamic Process
        • The Example Applied to the Sun and Earth
      • Another Error about Thermodynamics >
        • A Darwinist Argument about Thermodynamics
        • Sunlight and Earth Temperature
        • What Makes Sunlight Suitable?
      • The Night Sky Is Dark >
        • Olbers and his Paradox
        • A Black Forest and the Stars >
          • Seeing to the Far Limit of the Universe
          • The Limit of the Known Universe
          • Ordinary Darkness
      • A Planet Suitable for Life
      • The Thermodynamics of Life >
        • Living Organisms and Heat Engines >
          • The Thermodynamics of Life without Sunlight
        • Entropy Thermodynamics and Prigogine >
          • Darwinism and Thermodynamics
      • Thermodynamics and the Universe >
        • Formless and Dark but Energetic and Orderly >
          • Entropy and Penrose
        • Creative Agencies and Their Characteristics
    • Complex Order-Life-Intelligence >
      • Random Action and Complexity
      • Does Matter Organize Itself?
      • Complexity Can Be Specified
      • Information and Physical Laws
      • Did Our Life Begin Elsewhere?
      • Discovering Alien Life Will Change Nothing
      • Creative Design Suits the Universe for Life
    • The Quest Continues
  • Creationism that Scientists Can Accept
  • About
  • Contact
  • DVD
  • Booklet