Rubidium Frequency
Rubidium Frequency
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Operational frequency stability of rubidium and cesium frequency standards (NASA technical note) … |
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On-orbit frequency stability analysis of the GPS NAVSTAR 9 rubidium clock and NAVSTARs 9 and 10 cesium clocks (SuDoc D 210.8/2:6076) … |
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The long-term performance of two rubidium vapor frequency standards (NBS technical note 341) … |
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EFRATOM 10MHZ LPRO-101 Rubidium Frequency Standard $35.00 |
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1 Hz to 20 MHz|Programable Rubidium Frequency standard $150.00 |
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Rubidium FE-5650A Rubidium Frequency Standard 10 MHz $199.95 |
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Rubidium FE-5650A Rubidium Frequency Standard 10 MHz $199.95 |
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Rubidium FE-5650A Rubidium Frequency Standard 10 MHz $199.95 |
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10mhz 1pps Rubidium Atomic Frequency standard FE-5680A $199.99 |
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Ultra low jitter 16.9344Mhz Rubidium Frequency Clock $269.99 |
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Efratom FRS-A 10MHZ Rubidium FREQUENCY Standard $69.90 |
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Rubidium Atomic Frequency standard FE-5680A Series $199.00 |
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Efratom 10MHZ Rubidium FREQUENCY Standard FRS-C $69.99 |
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Supper Low JITTER Clock 11.2896Mhz Rubidium Frequency $269.99 |
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EFRATOM 10MHZ LPRO-101 Rubidium Frequency Standard $35.00 |
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RARE NEW RUBIDIUM LAMP FREQUENCY STANDARD EFRATOM $39.99 |
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RUBIDIUM FEI AIRCRAFT FREQUENCY STANDARD OSCILLATOR $299.99 |
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EFRATOM MRT RUBIDIUM OSCILLATOR FREQUENCY STANDARD $399.99 |
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FE-5680A Rubidium Atomic Frequency Standard 10MHz out $99.00 |
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Efratom FRS-A 10MHZ Rubidium FREQUENCY Standard $69.90 |
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Efratom 10MHZ Rubidium FREQUENCY Standard FRS-C $59.90 |
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Efratom LPRO-101 10MHz Rubidium Frequency Standard 905 $79.98 |
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RUBIDIUM ATOMIC FREQUENCY STANDARD FE5650A OUTPUT 10MHz $175.00 |
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Ball Efratom PRFS-102 Rubidium Frequency Stnd 9338 $495.00 |
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Ball Efratom PRFS-102 Rubidium Frequency Stnd 9414 $549.00 |
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Electronic Research 130 Rubidium Frequency Standard $495.00 |
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Efratom LPRO-101 Rubidium Frequency Standard $129.00 |
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Fluke PM6685R/676 Rubidium Frequency Counter $4,444.00 |
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DIY Frequency Rubidium Oscillator Std FE-5680A $285.00 |
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Ball Efratom MRT Rubidium Frequency Standard !! $1,399.99 |
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fe5680a Rubidium Frequency standard $180.15 |
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10mhz 1pps Rubidium Atomic Frequency standard FE-5680A $120.00 |
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Rubidium Atomic Frequency Standard Model FE-5680A $125.00 |
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QTY-20 TEMEX LPFRS-01 Rubidium Frequency Standard $1,399.00 |
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EFRATOM LPRO-101 Rubidium 10MHZ Frequency Standard $80.00 |
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EFRATOM LPRO-101 Rubidium 10MHZ Frequency Standard $80.00 |
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Efratom 10mhz square rubidium frequency standard $57.99 |
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Efratom 10mhz rubidium frequency standard TTL square $63.99 |
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1 Hz to 20 MHz Programable Rubidium Frequency easy kit $224.99 |
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1 Hz to 20 MHz Programable Rubidium Frequency standard $199.99 |
The work function for metallic rubidium?
The work function for metallic rubidium is 2.09 eV. What is the minimum frequency of light needed, to observe the photoelectric effect? Calculate the kinetic energy and the speed of electrons by light of wavelength 195 nm ejected.
On the threshold of the energy of the light wave frequency equal to the work required for electron emission: ₀ h ⋅ f = W (h Planck's constant) => f = W ₀ / H = 2.09eV / 4.135667 × 10 ^-15eVs = 5.054 × 10 ^ 14s are ^ -1, the kinetic energy of the electrons emitted at higher frequencies: E = h ⋅ f – W = H • c / λ – W (c speed of light) = 4.135667 × 10 ^-15eVs · 2.99792 × 10 ^ 8m / s / 195 × 10 ^-9m – 2.09eV = 4.27eV = 6.838 × 10 ^-19J · E = mv ² / 2 => v = √ (2E / m) = √ (2 · 6.838 × 10 ^-19J / 9.10938 × 10 ^-31kg) = 8.66 x 10 ^ 5 m / s
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