Planck's constant

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  1. 55877   8 

    LD Photocell for determining Planck's constant

    Photocell for determining Planck's constant

    Details
  2. 558791   8 

    LD Holder for photocell

    Holder for photocell

    Details
  3. Interference filter

    Extremely narrow-band filter for spectral lines. For insertion in filter wheel with diaphragm (558 792) or holder for interference filters (468 41).

    • Filter's diameter: 25 mm
    • Holder's diameter: 28 mm
    • Precision of medium wavelength: ±2 nm
    • Transmission outside the line: < 0.01 %
    Kat.-Nr.Medium wavelengthHalf widthTransmissionfor
    468 400   8 644 nm18 nm50 %Cd
    468 405633 nm8 nm> 65 %Ne
    468 401   8 578 nm10 nm> 50 %Hg
    468 402   8 546 nm10 nm> 54 %Hg
    468 403   8 436 nm8 nm> 40 %Hg
    468 404   8 405 nm11 nm> 30 %Hg
    468 406365 nm13 nm40 %Hg
  4. 46841   8 

    LD Holder for interference filters

    Holder for interference filters

    Details
  5. 558792   8 

    LD Filter wheel with diaphragm

    Filter wheel with diaphragm

    Details
  6. 55879   8 

    LD Compact arrangement for determining Planck's constant

    Compact arrangement for determining Planck's constant

    Details
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