Category: Nagasaki

The Science of Nuclear Weapons, Visualized


This post is by Mark Belan from Visual Capitalist


this infographic visualizes the science of how nuclear weapons work, including the processes of fission and fusion

Visualized: How Nuclear Weapons Work

In 1945, the world’s first-ever nuclear weapon was detonated at the Trinity test site in New Mexico, United States, marking the beginning of the Atomic Age.

Since then, the global nuclear stockpile has multiplied, and when geopolitical tensions rise, the idea of a nuclear apocalypse understandably causes widespread concern.

But despite their catastrophically large effects, the science of how nuclear weapons work is atomically small.

The Atomic Science of Nuclear Weapons

All matter is composed of atoms, which host different combinations of three particles—protons, electrons, and neutrons. Nuclear weapons work by capitalizing on the interactions of protons and neutrons to create an explosive chain reaction.

At the center of every atom is a core called the nucleus, which is composed of closely-bound protons and neutrons. While the number of protons is unique to each element in the periodic table, the number of neutrons can vary. As a result, there are multiple “species” of some elements, known as isotopes.

For example, here are some isotopes of uranium:

  • Uranium-238: 92 protons, 146 neutrons
  • Uranium-235: 92 protons, 143 neutrons
  • Uranium-234: 92 protons, 142 neutrons

These isotopes can be stable or unstable. Stable isotopes have a relatively static or unchanging number of neutrons. But when a chemical element has too many neutrons, it becomes unstable or fissile.

When fissile isotopes attempt to become stable, they shed excess neutrons and energy. This energy is where nuclear weapons get their explosivity from.

There are two (Read more...)

Pegasus Tech Ventures and Japanet launch new $50M fund to bring global startups to Nagasaki



Pegasus Tech Ventures, a firm that helps corporations launch startup investment funds, announced a new partnership with Japanet today. Japanet, one of Japan’s largest television shopping companies, and Pegasus have established a $50 million venture fund to invest in startups from around the world, including for a major new development in Nagasaki.

Japanet is looking for startups to support its expansion into new sectors. These include a building project called Stadium City in Nagasaki that will open in 2024. It will center around a sports stadium, and include mixed-use facilities like offices, retail stores, hotels and event venues. Japanet also plans to focus on new services for elderly people, and children’s education.

Anis Uzzaman, general partner and chief executive officer of Pegasus Tech Ventures, told TechCrunch that Stadium City was created to help revitalize Nagasaki’s economy and bring new products and services, including tech, from around the world to the city. Japanet’s plan is to “both co-develop solutions with earlier-stage startups over time, as well as help later-stage startups localize and deploy in the Stadium City,” said Uzzaman.

Pegasus Tech Ventures’ team will help Japanet scout startups from around the world, including North America, Israel, Europe and Asia. The firm currently has $1.5 billion assets under management and other corporations it has worked with through its “venture capital-as-a-service” program include Asus, Sega Sammy Holdings, Sunny Health, Infocom Corporation and Aisin Seiki. Pegasus Tech Ventures’ portfolio includes startups like SpaceX, 23andMe, (Read more...)