More than 40% of the works of art for sale are false and their identification is not easy. Sometimes the scammer self-denounces, as those who claimed that a Silesian frieze was medieval, although the turkeys that appeared in it did not reach Europe until 1492. The less crude fiascos are unmasked by dating the wood , if the work it is painted on this material; or the analysis with X-rays, infrared or ultraviolet to look for typical traces of the author. Scratching the paint and analyzing it under a microscope allows us to know with the help of a database if its composition is that used by the artist. And a new statistical program from Dartmouth University (USA) can recognize the author's style.
How do you know that a painting is false?
Japanese scientists create a 'washing machine for humans'
Can you imagine taking a relaxing bath in a machine that washes you with bubbles, plays relaxing music or videos?
Insect swarms generate as much electricity as a thunderstorm
Swarms of bees can generate an electrical charge of 1,000 volts per meter, a higher voltage density than thunderclouds and electrified dust storms.
This is what the Earth's magnetic field sounds like
The shield that protects our planet sounds 'pretty scary', according to ESA engineers.
Days were only 17 hours long 2.46 billion years ago
It was when the Moon was much closer to our planet. As the centuries pass, the Moon slowly recedes and the length of our day gradually lengthens accordingly.
Women are better at doing crosswords
A new study has revealed that women have a 'small but robust' advantage over time.