Lasers emitting in the red region of the spectrum have been available since the invention of the ruby laser in 1960. In 1962 the red heliumneon laser was invented, and these two types of lasers were widely used in many scientific applications including holography, and in education. Red heliumneon lasers were used commercially in LaserDisc players. The use of red laser diodes became widespread with the commercial success of modern DVD players, which use a 660 nm laser diode technology. Today, red and red-orange laser diodes are widely available to the public in the form of extremely inexpensive laser pointers. Portable, high-powered versions are also available for various applications. More recently, 671 nm diode-pumped solid state (DPSS) lasers have been introduced to the market for all-DPSS laser display systems, particle image velocimetry, Raman spectroscopy, and holography.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): What was invented in 1906?
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The oldest rocks in the group are in the north west of Scotland, Ireland and North Wales and are 2,700 million years old. During the Silurian period the north-western regions collided with the south-east, which had been part of a separate continental landmass. The topography of the islands is modest in scale by global standards. Ben Nevis rises to an elevation of only 1,344 metres (4,409 ft), and Lough Neagh, which is notably larger than other lakes on the isles, covers 390 square kilometres (151 sq mi). The climate is temperate marine, with mild winters and warm summers. The North Atlantic Drift brings significant moisture and raises temperatures 11 C (20 F) above the global average for the latitude. This led to a landscape which was long dominated by temperate rainforest, although human activity has since cleared the vast majority of forest cover. The region was re-inhabited after the last glacial period of Quaternary glaciation, by 12,000 BC when Great Britain was still a peninsula of the European continent. Ireland, which became an island by 12,000 BC, was not inhabited until after 8000 BC. Great Britain became an island by 5600 BC.
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Spectre (2015) is the twenty-fourth James Bond film produced by Eon Productions. It features Daniel Craig in his fourth performance as James Bond, and Christoph Waltz as Ernst Stavro Blofeld, with the film marking the character's re-introduction into the series. It was directed by Sam Mendes as his second James Bond film following Skyfall, and was written by John Logan, Neal Purvis, Robert Wade and Jez Butterworth. It is distributed by Metro-Goldwyn-Mayer and Columbia Pictures. With a budget around $245 million, it is the most expensive Bond film and one of the most expensive films ever made.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): John Logan directed what 2015 film?
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unanswerable