

Shows the properties of different solvents, including their electrical conductivity or lack of it. Shows how they affect the boiling point of water. Demonstrates ion migration during electrolysis.

Shows the properties of different solvents, including their electrical conductivity or lack of it. Shows how they affect the boiling point of water. Demonstrates ion migration during electrolysis.
1960-01-01
0
7.0A documentary telling the remarkable human story of Stephen Hawking. For the first time, the personal archives and the testimonies of his closest family reveal both the scale of Hawking's triumphs and the real cost of his disability and success.
7.5A documentary examining what the Tyrannosaurus Rex was really like - both appearance and behaviour - using the recent palaeontological and zoological research.
0.0A variety of scientific subjects, including the laboratory of a plastic surgeon in London, and his method for applying permanent makeup; a new school for kiddies employing finger paint so they can express their urge to put things on paper; Army aviation, showing the latest development in blind landing. Produced in Cinecolor.
7.4In this two-part Channel 4 series, Professor Richard Dawkins challenges what he describes as 'a process of non-thinking called faith'. He describes his astonishment that, at the start of the 21st century, religious faith is gaining ground in the face of rational, scientific truth. Science, based on scepticism, investigation and evidence, must continuously test its own concepts and claims. Faith, by definition, defies evidence: it is untested and unshakeable, and is therefore in direct contradiction with science. In addition, though religions preach morality, peace and hope, in fact, says Dawkins, they bring intolerance, violence and destruction. The growth of extreme fundamentalism in so many religions across the world not only endangers humanity but, he argues, is in conflict with the trend over thousands of years of history for humanity to progress to become more enlightened and more tolerant.
The film discusses the evolution and potential of using light waves, particularly coherent light, for communication. It highlights the development of lasers at Bell Telephone Laboratories, explaining how they produce a highly controlled and intense beam of light that could revolutionize communication. The film emphasizes the vast possibilities of lasers, including applications in telecommunications, surgery, and exploring the universe, suggesting that this technology represents a significant step in humanity's understanding and use of light.
6.0This 1971 color anti-drug use and abuse film was produced by Concept Films and directed by Brian Kellman for Encyclopedia Britannica. “Weed: The Story of Marijuana” combines time-lapse, montage, illustrations, animation (by Paul Fierlinger and emigre Pavel Vošický) and dramatized, documentary-style interviews to survey the evolving role of cannabis in U.S. society, with emphasis on the legal risks faced by young people. A unique score of experimental synthesizer music is provided by Tony Luisi on an EMS VCS 3 “Putney”
0.0A team of scientists search for the lost island of Testerep in front of the Belgian coast, venturing into artificial landscapes and virtual realities.
0.0An educational film about frogs produced by Encyclopædia Britannica Films, an educational film production company in the 20th century owned by Encyclopædia Britannica Inc.
7.7The sun is the miracle that makes everything possible - but also the greatest danger. For the first time, a feature-length documentary is dedicated to the search for the significance of our home star for mankind, science and nature. Thanks to the researchers from the American space agency NASA, who work at the Canary Islands observatories in the hottest and coldest places on the planet.
0.0A large iron meteorite is found by two enthusiasts. But who owns it? A subtle film about property rights that develops into a philosophical and slightly absurd story.
0.0The Estonian national team is the first Baltic team to participate in the Bridgestone World Solar Challenge, the solar car world championship in Australia. This is a competition with a 35-year history, which has been launched to push the boundaries of both green technology and the capabilities of young talents. The documentary follows young Estonian engineers and software developers and tells the story through their eyes of how the solar car is developed, built and prepared for the challenge in one of the most complex competitions in the world. Young people have to face tough competition conditions, technical and mental challenges and competitors from the world's top universities.
6.0An illuminating look inside the lives of the Grucci family, whose Long Island-based fireworks business has been lighting up night skies around the world with spectacular displays since the 1800s.
0.0The 1977 discovery of RNA splicing by Dr. Phillip A. Sharp, Kentucky farm boy turned Nobel-prize winning scientist, set the stage for a revolution in molecular biology, enabling research into a new class of medicines predicated on recombinant DNA techniques ranging from the development of synthetic insulin and human growth hormone to the COVID-19 vaccine.
6.0A crash course in the professional and scientific work related to the field of venomous herpetology. The film covers diverse topics, including biochemistry, biology, law and public policy, conservation, venom collection, animal husbandry, antivenom production, emergency medicine, veterinary medicine, toxicology and toxinology. The film follows the personal and working lives of prominent experts in the field, beginning with their childhood interest through their professional careers, with particular emphasis on the sciences related to their work.
0.0What forms might life take in the Solar System and beyond? In the Academy's newest original planetarium show, see how a deeper understanding of Earth might help us locate other living worlds, light years away.
7.6A documentary of insect life in meadows and ponds, using incredible close-ups, slow motion, and time-lapse photography. It includes bees collecting nectar, ladybugs eating mites, snails mating, spiders wrapping their catch, a scarab beetle relentlessly pushing its ball of dung uphill, endless lines of caterpillars, an underwater spider creating an air bubble to live in, and a mosquito hatching.
10.0For over three decades, NASA and an international team of scientists and engineers pushed the limits of technology, innovation, and perseverance to build and launch the James Webb Space Telescope, the most powerful space observatory ever created. Cosmic Dawn brings audiences behind the scenes with the Webb film crew, and never-before-heard testimonies revealing the real story of how this telescope overcame all odds.
6.6Using only archive film and a new musical score by the band Mogwai, Mark Cousins presents an impressionistic kaleidoscope of our nuclear times – protest marches, Cold War sabre-rattling, Chernobyl and Fukishima – but also the sublime beauty of the atomic world, and how x-rays and MRI scans have improved human lives. The nuclear age has been a nightmare, but dreamlike too.