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Thread: Light from Venus takes 134 sec to reach Earth on average

  1. #1 Light from Venus takes 134 sec to reach Earth on average 
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    In several different science books and Internet resources, it's been stated, "Light from the Sun takes app. 8 minutes to reach Earth. This is, of course, because light travels at 186,282 miles-per-second and Earth is app. 93 million miles from the Sun." Ok, so if sunlight takes 480 seconds to reach Earth and Venus' mean distance from the Sun is .72 AU (.7233322 AU), then on average, it takes sunlight 346 seconds or 5 minutes 46 seconds to reach Venus and the sunlight reflected off Venus takes 134 seconds or 2 min. 14 sec. to reach Earth, right?

    The reason this is important to me is that yesterday I premiered an original musical composition of mine entitled: The Morning Star - the light-bearer. This solo vibraphone piece (with a recorded birds chirping accompaniment) musically portrays how the Planet Venus is seen in the east three hours before sunrise. Gradually, dawn begins to break and the Morning Star fades from sight. I took the .7233322 AU and using the simplest alphanmeric code, turned it into the melody of G-B-C-C-C-B-B. I also took the 134 sec. the sunlight reflecting off Venus takes to travel to Earth and converted that to Ab-C-D (the Ab sounded more ethereal). I also utilized the ~.7 AU of Venus and the ~.4 AU of Mercury with the perfect fifth drone of G-D. I tried to emulate the speed of light by playing a lot of real fast arpeggios with four mallets and was partially inspired by listening to the American Harp Competition on the recent PBS show Harp Dreams.

    The vibraphone or vibraharp was first invented to emulate the sound of the harp. It is the first musical instrument to successfully use electricity, but it's simple motor only adds vibrato to an otherwise acoustic sound. Therefore, it can be played with motor on or off. I chose to have the motor on for the night time depiction of the Morning Star and turned it off once the Sun began to rise. (That made sense, right?)

    Furthermore, the Bible refers to the "morning star" in four locations, but some Bibles have given an incorrect meaning/insinuation to one translation. In the infamous verse of Isaiah 14:12, the original Hebrew term for morning star or 'day star' was translated into the Greek as Phosphorus: meaning 'light-bearer'/'light-bringer' and then translated from the Greek into the Latin Vulgate as 'Lucifer': again meaning 'light-bearer'/'light-bringer'. Because of Isaiah 14:12 comparing the evil King of Babylon to Lucifer, St. Jerome and other early Church fathers continued equating 'Lucifer' with Satan and the Devil. Milton's Paradise Lost describes Lucifer as a "fallen Archangel" and that's why we're stuck with Lucifer's first definition being this today. But then the New Testament compares Jesus and his teachings to the "morning star" three times and now you have an explanation of why many uninformed Christian fundamentalists choose to accuse the Freemasons of equating Lucifer with Jesus.

    Many Masons are also aware that by using Simple(74) English(74) Gematria(74), that Jesus=74 and Lucifer=74. This is the 'great Masonic(74) light' that is spread by the Morning(7 letters) Star(4).

    If any TSF members and moderators know of any other scientific/mathematical characteristics of Venus, please let me know. I can try to work them in through musical(7) code(4) for the next time I perform this composition. (Note: composer=74, melody=74, songs=74)


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  3. #2 Re: Light reflected off Venus takes 2 min 14 sec to reach Ea 
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    Quote Originally Posted by Brad Watson
    In several different science books and Internet resources, it's been stated, "Light from the Sun takes app. 8 minutes to reach Earth. This is, of course, because light travels at 186,282 miles-per-second and Earth is app. 93 million miles from the Sun." Ok, so if sunlight takes 480 seconds to reach Earth and Venus is at .72 AU (.7233322 AU), then it takes sunlight 346 seconds or 5 minutes 46 seconds to reach Venus and the sunlight reflected off Venus takes 134 seconds or 2 min. 14 sec. to reach Earth, right?
    Only if Venus is located exactly between the Sun and the Earth. In time, the distance can of course increase to that value plus 1 AU, when it is exactly behind the Sun.


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  4. #3 Sunlight takes 134 sec. to reflect off Venus and reach us 
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    Dishmaster(10,108),

    Thanks. Because of your reply, I tweaked the title to: Sunlight takes 134 sec. to reflect off Venus and reach us. I also went back and edited the op to say, "mean distance" and "average". So, when reading the op, am I now correct?

    Do you know of any other scientific/mathematical characteristics of Venus that I haven't mentioned in the op? Venus takes 225 Earth-days to orbit the Sun - I could work in B-B-E or Bb-Bb-Eb. (I should have thought of that before yesterday's performance.) Are you musically inclined?

    Are there any serious musicians/composers out there?
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  5. #4 Re: Sunlight takes 134 sec. to reflect off Venus and reach u 
    Moderator Moderator Dishmaster's Avatar
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    Quote Originally Posted by Brad Watson
    Thanks. Because of your reply, I tweaked the title to: Sunlight takes 134 sec. to reflect off Venus and reach us. I also went back and edited the op to say, "mean distance" and "average". So, when reading the op, am I now correct?
    The mean distance of Venus' orbit from the Sun is 0.723 AU = 108 159 260 510 m (1 AU = 149 597 870 691 m). With the speed of light of 299792458 m/s, this computes to a mean light travel time between the Sun and Venus of 360,780 s or 6 min 0.8 s. The perihelion and aphelion are 0.718 and 0.728 AU leading to light travel times of 5 min 58.3 s and 6 min 3.3 s.
    Quote Originally Posted by Brad Watson
    Do you know of any other scientific/mathematical characteristics of Venus that I haven't mentioned in the op?
    The rotation of Venus around its own axis is 243 days 27 minutes.
    Quote Originally Posted by Brad Watson
    Venus takes 225 Earth-days to orbit the Sun ...
    More precisely, it is 224.7 days, and that makes 1.92 Venus days.
    Quote Originally Posted by Brad Watson
    Are you musically inclined?
    Yes.
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  6. #5 Re: Sunlight takes 134 sec. to reflect off Venus and reach u 
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    Quote Originally Posted by Brad Watson
    Dishmaster(10,108),

    Thanks. Because of your reply, I tweaked the title to: Sunlight takes 134 sec. to reflect off Venus and reach us. I also went back and edited the op to say, "mean distance" and "average". So, when reading the op, am I now correct?
    No. For one, the time for light to reach the Earth from Venus while they are on the exact same side of the Sun is closer to 138 sec. For another, as already pointed out, when Earth and Venus are on opposite sides of the Sun this time increases to about 858.67 sec. So the average would be closer to 498.33 sec.
    "Men are apt to mistake the strength of their feelings for the strength of their argument.
    The heated mind resents the chill touch & relentless scrutiny of logic"-W.E. Gladstone


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    I did a bit of calculus, and in addition to the average of 6m 1s for sunlight to get to Venus, it takes an average of 9m 27s for the sunlight to reflect off Venus and reach Earth, for an average total time of about 14 minutes for the Sun-Venus-Earth path. Maximum brightness seems (I think) to occur at about 22 (~1/16th of its orbit) from Venus's inferior conjunction with Earth.
    Grief is the price we pay for love. (CM Parkes) Our postillion has been struck by lightning. (Unknown) War is always the choice of the chosen who will not have to fight. (Bono) The years tell much what the days never knew. (RW Emerson) Reality is not always probable, or likely. (JL Borges)
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    Occasionally someone makes a post that makes me wish we had the ability on this forum to award 'thank yous' or 'reputation points'. since we don't I just wanted to say that I liked your post.
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