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Your query 'United Kingdom' produced 824 results
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| | | United Kingdom, NPL (National Physical Laboratory) | | | Complete CMCs in Acoustics, Ultrasound, Vibration for United Kingdom (.PDF file)
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| Free-field sensitivity level. Reference measuring hydrophones/ projectors. Measurand unit, V/µPa | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.7 | | Three-transducer spherical wave reciprocity in a laboratory tank, IEC 565:1977 | | Frequency: 1 kHz to 2 kHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/10/01 |
| | | Free-field sensitivity level. Reference measuring hydrophones/ projectors. Measurand unit, V/µPa | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.5 | | Three-transducer spherical wave reciprocity in a laboratory tank; IEC 565:1977 | | Frequency: 2 kHz to 500 kHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/10/01 |
| | | Free-field sensitivity level. Reference measuring hydrophones. Measurand unit, V/µPa | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.9 | | Comparison with reference hydrophone, IEC 565:1977 | | Frequency: 1 kHz to 2 kHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/10/02 |
| | | Free-field sensitivity level. Reference measuring hydrophones. Measurand unit, V/µPa | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.7 | | Comparison with reference hydrophone, IEC 565:1977 | | Frequency: 2 kHz to 1 MHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/10/02 |
| | | Pressure sensitivity level. Reference measuring hydrophones. Measurand unit, V/µPa | | Absolute expanded uncertainty (k = 2, level of confidence 95%) in dB: 0.5 | | Comparison with a calibrated reference microphone | | Frequency: 25 Hz to 400 Hz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/10/03 |
| | | Free-field sensitivity. Hydrophone. Measurand unit, µV/Pa | | Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 6 | | Comparison with a secondary hydrophone in a non-linearly distorted sound field | | Frequency: 1 MHz to 8 MHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/07/01 |
| | | Free-field sensitivity. Hydrophone. Measurand unit, µV/Pa | | Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 7 | | Comparison with a secondary hydrophone in a non-linearly distorted sound field | | Frequency: 9 MHz to 12 MHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/07/01 |
| | | Free-field sensitivity. Hydrophone. Measurand unit, µV/Pa | | Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 8 | | Comparison with a secondary hydrophone in a non-linearly distorted sound field | | Frequency: 13 MHz to 16 MHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/07/01 |
| | | Free-field sensitivity. Hydrophone. Measurand unit, µV/Pa | | Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 11 | | Comparison with a secondary hydrophone in a non-linearly distorted sound field | | Frequency: 17 MHz to 20 MHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/07/01 |
| | | Ultrasonic power. Plane piston ultrasound transducer and generator, 0.0005 W to 1 W | | Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 2.5 to 6 | | Primary standard radiation force balance | | Frequency: 0.8 MHz to 20 MHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/08/05 |
| | | Ultrasonic power. Plane piston ultrasound transducer and generator, 0.50 W to 20 W | | Relative expanded uncertainty (k = 2, level of confidence 95 %) in %: 3.5 to 5 | | Calibrated radiation force balance | | Frequency: 0.8 MHz to 3 MHz | | Approved on 29 September 2004 | | Internal NMI service identifier: NPL/AW/08/05 |
| | | Transmittance, regular, spectral. Spectrally-neutral material, 1E-03 to 1 | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): 2.7E-05 to 1.6E-03, varies as the logarithm of the measurand | | Reference spectrophotometer | | Wavelength: 200 nm to 209 nm | | Bandwidth: < 3 nm |
| | | Transmittance, regular, spectral. Spectrally-neutral material, 1E-03 to 1 | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): 4E-05 to 6E-04, varies as the logarithm of the measurand | | Reference spectrophotometer | | Wavelength: 210 nm to 219 nm | | Bandwidth: < 3 nm |
| | | Transmittance, regular, spectral. Spectrally-neutral material, 1E-03 to 1 | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): 3E-05 to 4E-04, varies as the logarithm of the measurand | | Reference spectrophotometer | | Wavelength: 220 nm to 249 nm | | Bandwidth: < 3 nm |
| | | Emittance, spectral. General material, 0 to 1 | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.003 to 0.001, varies with wavenumber | | Spectrophotometer with reflectometer | | Wavelength range: 4000 cm-1 to 180 cm-1 | | Bandwidth: 2 cm-1 to 10 cm-1 | | Specific measurement conditions: regular reflectometer | | Regular reflectance measurements
Approved on 07 May 2007 |
| | | Emittance, spectral. General material, 0 to 1 | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): 0.04 to 0.004, varies with wavenumber | | Spectrophotometer with reflectometer | | Wavelength range: 4000 cm-1 to 180 cm-1 | | Bandwidth: 2 cm-1 to 10 cm-1 | | Specific measurement conditions: hemispherical reflectometer |
| | | BRDF. General material, 0.0008 sr-1 to 1000 sr-1 | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): (0.00003 + 0.0034R) | | Reference reflectometer | | Wavelength range: 350 nm to 400 nm | | Bandwidth: 10 nm to 20 nm | | Uncertainty values are for 0/45 geometry and white Spectralon. Uncertainty varies with scattering geometry and angular dependence of scattering properties of material
Approved on 07 May 2007 |
| | | BRDF. General material, 0.0003 sr-1 to 1000 sr-1 | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): (0.00003 + 0.0019R) | | Reference reflectometer | | Wavelength range: 400 nm to 1000 nm | | Bandwidth: 10 nm to 20 nm | | Uncertainty values are for 0/45 geometry and white Spectralon. Uncertainty varies with scattering geometry and angular dependence of scattering properties of material
Approved on 07 May 2007 |
| | | Reflectance factor. General material, 0.25 % to 300000 % | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): (0.01% + 0.0034R) | | Reference reflectometer | | Wavelength range: 350 nm to 400 nm | | Bandwidth: 10 nm to 20 nm | | Uncertainty values are for 0/45 geometry and white Spectralon. Uncertainty varies with scattering geometry and angular dependence of scattering properties of material
Approved on 07 May 2007 |
| | | Reflectance factor. General material, 0.1 % to 300000 % | | Absolute expanded uncertainty (k = 2, level of confidence 95 %): (0.01% + 0.0019R) | | Reference reflectometer | | Wavelength range: 400 nm to 1000 nm | | Bandwidth: 10 nm to 20 nm | | Uncertainty values are for 0/45 geometry and white Spectralon. Uncertainty varies with scattering geometry and angular dependence of scattering properties of material
Approved on 07 May 2007 |
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