Radar Rotation of Mercury
A CLEA, computer lab,
Done at Montgomery College, Takoma Park
Dr. Harold Williams, professor
Student’s Name: ______________________________
Date you took data:
______________________c=3E8 m/s=3x108 m/s Rmerc=2.42E6 m=2.42 x106 f=430Mhz=4.3E8 hz=4.3 x108 hz
c/f=6.976E-1 m=6.976 x10-1 m
2p Rmerc =1.5205E7 m=1.5205 x107 m
m is meters. s is seconds. hz is herz=cycle/s.
(1day/86,400s)*2p Rmerc =1.759E2 m day/s=1.759 x102 m day/s
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D t(s) |
120E-6 |
210E-6 |
300E-6 |
390E-6 |
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d(m)= cD t/2 |
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x(m)= Rmerc –d |
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y(m)=Ö (Rmerc2-x2) |
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D fleft |
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D fright |
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D ftotal=(D fright -D fleft)/2 |
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D fc=D ftotal /2 |
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V0(m/s)= D fc c/f |
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V(m/s)= Rmerc V0/y |
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P(days)= (1day/86,400s)2p Rmerc /V |
D f sub earth pulse(T=0) = _________ Vorbital =c (D f sub earth pulse /f) = ___ _m/s=______ km/s
Average Rotation Period of Mercury Prot = _________days
What Percentage difference from the accepted value of 59 days?
100*(Prot -59)/59 = ________%