A young girl walks with a Ukrainian flag during an event for Ukrainian Independence Day in the historical Grand Place of Brussels, Wednesday, August 24, 2022. European leaders are pledging unwavering support for Ukraine as the war-torn country marks its Independence Day. The commemorations Wednesday coincide with the six-month milestone of Russia's invasion. (Photo by Virginia Mayo/AP Photo)

Belgian riot police officers are covered by hay and eggs thrown by demonstrators as farmers and dairy farmers from all over Europe take part in a demonstration outside an European Union farm ministers emergency meeting at the EU Council headquarters in Brussels, Belgium, September 7, 2015. Thousands of farmers gathered in the European capital calling for more help with low prices and high costs. (Photo by Jacky Naegelen/Reuters)

If we were to burn NH4Cr2O7 with HgSCN in the Dark Ages in Europe and show it to anyone, it is us who would be burning next on a fiery cross of Inquisition. And it’s no wonder, since this experiment produces a truly marvelous result. At first, as you ignite the mixture of NH4Cr2O7 and HgSCN, all you can see is that it is slowly burning with a reddish flame. After a while, however, a crater is formed in the middle of the burning pile, and then, suddenly, tentacle-like appendages start sprouting from the burning mixture. And you can almost hear the scream of the mad occultist – “Come forth, Kraken! Come forth!” But of course, this is simply a chemical reaction that is called the "Pharoah's Serpent". It was also often sold in firework stores until people realized that it was toxic.

Participants of the “Still Standing for Culture” action of the cultural sector rally in Les Marolles neighborhood of Brussels, Belgium, 13 March 2021. Workers of the cultural sector along with second-hand dealers of the Jeu de Balle place gathered in Les Marolles to denounce the lack of financial support and call for solutions to the impact of the coronavirus crisis on culture professionals and the sector as a whole one year after the Covid-19 pandemic lockdowns started. (Photo by Stephanie Lecocq/EPA/EFE)

People take part in fake festival called “La Boum” organized by an anonymous group of people on Facebook for an April 1 joke at the Bois de la Cambre, in Brussels, Belgium, 01 April 2021. An anonymous group created a Facebook event called “La Boum”, touting an alleged festival to take place with famous DJs as headliners. Thousands of people on social media had shown interest to take part in the gathering, while police have advised that no authorization has been given for a music event. (Photo by Stephanie Lecocq/EPA/EFE)

A woman wearing a four-leaf clover-like hairpin takes a selfie nearby Nanluoguxiang street in Beijing, China, September 16, 2015. Wearing antenna styled hairpins in the shape of various flowers and plants at scenic spots has become a new trend in Beijing. (Photo by Kim Kyung-Hoon/Reuters)

A drone view shows the Folkestone White Horse with a red nose that has been placed to make the landmark overlooking the town look like Rudolph the Red-Nosed Reindeer ahead of Christmas, in Folkestone, Britain, on December 19, 2024. (Photo by Chris J. Ratcliffe/Reuters)

Sеxy women kissing in bed. (Photo by Sakkmesterke/Getty Images)