Report/Guide

Verrill, J F; Clarke, P J; O'Halloran, J (1997) Study of improved methods for Absolute Colorimetry. Fifth report - study of colorimetric errors on industrial instruments. NPL Report. COEM 2

Verrill, J F; Hanson, A; Knee, P C (1997) Study of improved methods for absolute colorimetry. Fourth report: investigation of colorimetric errors. NPL Report. COEM 3

Verrill, J F; Knee, P C; Hanson, A (1997) Study of improved methods for absolute colorimetry. Third report, recommendations. NPL Report. QM 130

Verrill, J F; Clarke, P J; O'Halloran, J; Knee, P C (1995) NPL Spectrophotometry and Colorimetry club. Intercomparison of colour measurements. NPL Report. QU 113

Article

Clarke, P J; Hanson, A R; Verrill, J F (1999) Determination of colorimetric uncertainties in the spectrophotometric measurement of colour. Anal. Chim. Acta, 380. pp. 277-284.

Hanson, A R; Verrill, J F (1999) Study of the dependency of spectral radiance factor and colorimetric values on geometric tolerances. Anal. Chim. Acta, 380. pp. 363-367.

Hanson, A R; Verrill, J F (1998) Study of the dependency of spectral radiance factor and colorimetric values on geometrical tolerances. Anal. Chim. Acta, 380 (2-3). pp. 363-368.

Verrill, J F; Malkin, F*; Larkin, J A*; Wardman, R H* (1997) The BCRA-NPL Ceramic Colour Standards series II - Master spectral reflectance and thermochromism data. Journal of the Society of Dyers and Colourists., 113. pp. 84-94.

Verrill, J F (1997) Meeting the requirements for traceability. Laboratory News (Novemb). p. 18.

Verrill, J F (1996) Daylight, by any other name. Ligh. Equip. News (June). p. 8.

Verrill, J F; Knee, P C; O'Halloran, J (1995) A study of the uniformity and thermochromism of surface colour standards. Commission Internationale de L'eclairage Cie X, 119. pp. 95-96.

Conference or Workshop Item

Verrill, J F (1997) Towards improved accuracy of surface colour measurements. In: Proc. AIC Color 97, May 1997, Kyoto, Japan.

Taylor, J A F; Verrill, J F (1995) Luminance discrimination asymmetrics. In: 23 session of the International Commission on Illumination, November 1995, New Delhi, India.

Verrill, J F (1995) Towards colour by number. In: Colour Communications Conference, April 1995, Manchester, UK.

Verrill, J F (1994) Measurement standards for on-line spectrophotometry between 200 nm and 3000 nm. In: On-line optical measurements: calibration and validation, joint meeting, NPL Spectrophotometry and Colorimetry Club and Institute of Measurement and Control, 17 February 1994, NPL, Teddington.

Taylor, J A F; Clarke, P J; Hanson, A R; Knee, P C; Verrill, J F (1994) An investigation into the human visual system in the mesopic region using both a classical optical instrument and a visual display unit. In: Symposium on Advances in Photometry, December 1994, Vienna, Austria.

Book Chapter/Section

Verrill, J F (1995) Advances in spectrophotometric transfer standards at the National Physical Laboratory. In: Spectrophotometry, luminescence and colour; science and compliance.(Burgess, C, and Jones, D G, eds). Amsterdam, Elsevier, pp. 49-63.

Verrill, J F; Williams, D C (1995) The development of a new reference spectrofluorimeter at the National Physical Laboratory. In: Spectrophotometry, luminescence and colour; science and compliance.(Burgess, C, and Jones, D G, eds). Amsterdam, Elsevier, pp. 111-115.