Skip to main content
Donate to the 95 years appeal
The science of rainbows inspires new miniature laser technology
Mirrors are the technology behind modern lasers. New research shows that lasers can be made inside water droplets, using the reflective properties of water, write ROX MIDDLETON, LIAM SHAW and JOEL HELLEWELL
A laser display at the Eden Project in Cornwall, 2017

EVERY four years, each Olympic flame starts its life in a parabolic mirror in Greece, lit by reflection of the sun. 

The curved sides of the mirror reflect light to the same point, intensifying the light so brightly that it can cause the torch to catch alight. 

The same phenomenon was responsible when the concave face of a London skyscraper, nicknamed the “Walkie-Talkie,” concentrated the sun’s heat onto a luxury car parked below, melting parts of its metal and glass exterior. 

The ‘Walkie-Talkie’ skyscraper in London which melted part of a nearby car in 2013
The 95th Anniversary Appeal
Support the Morning Star
You have reached the free limit.
Subscribe to continue reading.
Similar stories
The crowd at Manchester Punk Festival 2024
Culture / 11 April 2025
11 April 2025
Ben Cowles speaks with IAN ‘TREE’ ROBINSON and ANDY DAVIES, two of the string pullers behind the Manchester Punk Festival, ahead of its 10th year show later this month
Second Cumming - Bella Caledonia 2020, by Lorna Miller
Exhibition review / 21 March 2025
21 March 2025
In an exhibition of the graphic art of Lorna Miller, MATT KERR takes a lungful of the oxygen of dissent
GUILTY PARTIES: Rembrandt Van Rijn (1606-1669), Syndics of t
Book Review / 4 February 2025
4 February 2025
CAROLINE FOWLER explains how the slave trade helped establish the ‘golden age’ of Dutch painting and where to find its hidden traces
RESILIENCE: (Right) Stand Up To Racism protest on October 26
Features / 31 December 2024
31 December 2024
The Morning Star sorts the good eggs from the rotten scoundrels of the year