Signature
Collecting correspondence and detecting Dickens
9 Nov 2020
Des Schollum, the owner of The House of Books in Lower Hutt boasts one of the country's largest collections of private letters and is a leading expert on signature forgery. Recently he was… Audio
Laser Spectroscopy Gas Detector
12 Jun 2014
Photonic Innovations is developing a toxic gas detector which uses laser spectroscopy Audio
Laser Spectroscopy Gas Detector
12 Jun 2014
Photonic Innovations is developing a toxic gas detector which uses laser spectroscopy
Audio