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Minimum Detectable Wavelength Of A Wire Mesh Radio Telescope?
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The original dish design of the Lovell Radio Telescope at Jodrell Bank used a 50 mm open wire mesh. Estimate the minimum wavelength detectable using this design.
The mark scheme says lambda/20 = 0.05, lambda = 1.
Where the hell did they pluck this 20 from?
The mark scheme says lambda/20 = 0.05, lambda = 1.
Where the hell did they pluck this 20 from?
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#2
50mm = 1/20th of 1 meter, the standard SI unit.)
(Disclaimer: my knowledge of astronomy is limited to being able to identify correctly the moon at night. And I’m a big fan of Thomas Dolby’s “The Golden Age of Wireless”)
(Disclaimer: my knowledge of astronomy is limited to being able to identify correctly the moon at night. And I’m a big fan of Thomas Dolby’s “The Golden Age of Wireless”)
Last edited by HedgePig; 1 year ago
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(Original post by HedgePig)
50mm = 1/20th of 1 meter, the standard SI unit.)
(Disclaimer: my knowledge of astronomy is limited to being able to identify correctly the moon at night. And I’m a big fan of Thomas Dolby’s “The Golden Age of Wireless”)
50mm = 1/20th of 1 meter, the standard SI unit.)
(Disclaimer: my knowledge of astronomy is limited to being able to identify correctly the moon at night. And I’m a big fan of Thomas Dolby’s “The Golden Age of Wireless”)
So assuming what you said is correct than no matter what the separation of the mesh is, the minimum wavelength would be 1 meter?
e.g. 10mm separation, lambda/10 = 0.01, lambda = 1m
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#7
(Original post by Retsek)
The original dish design of the Lovell Radio Telescope at Jodrell Bank used a 50 mm open wire mesh. Estimate the minimum wavelength detectable using this design.
The mark scheme says lambda/20 = 0.05, lambda = 1.
Where the hell did they pluck this 20 from?
The original dish design of the Lovell Radio Telescope at Jodrell Bank used a 50 mm open wire mesh. Estimate the minimum wavelength detectable using this design.
The mark scheme says lambda/20 = 0.05, lambda = 1.
Where the hell did they pluck this 20 from?
So 50 mm wire mesh
0.05*20=1m
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