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This article presents the findings of a participative action research project into how arts-based inquiry can revitalise equality and diversity organisational practices. We demonstrate that the arts-based methodologies introduced enabled participants to explore the meanings they brought to equality and diversity work, by creating a liminal space for learning. We illustrate our findings through an exploration of how participants engaged with the inquiry, the learning about equality and diversity that took place in the workshops and the challenges and opportunities of translating this into change practice in the workplace. The article's originality lies in its analysis of poetic writings, dreams and visual artefacts created in the context of participative inquiry. Engaging with tacit knowledge extended understanding of the contribution that arts-based, aesthetic inquiry can bring to organisational practice, and more specifically towards restoring the transformative potential of organisational practices to promote equality and diversity.

The design of mirrors composed of multilayer stacks of dielectric films is considered. High reflectance over an extended spectral range is attained by positioning the stacks so that on a wavelength scale their high-reflectance bands are either contiguous or overlapping. Certain precautions must be taken in the choice of stacks to avoid deep-reflectance minima from developing within the extended high-reflectance region. Some of these are discussed and illustrated with both computional and experimental curves. The techniques of extending the high-reflectance regions are applicable not only to mirrors, but also to low- and high-pass cutoff filters and to multilayer polarizers.

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