In this paper, a different manner to analyze a buck converter and how to design its feedback control is proposed. The block diagram of the buck converter plant will be described using space-state ...

We are developing, at the Huazhong University of Science and Technology, a small-animal positron emission tomograph (PET) scanner that has two new features. Firstly, it uses detector modules that are ...

Choose from 392 Solar System Diagram stock illustrations from iStock. Find high-quality royalty-free vector images that you won't find anywhere else.

This new dwarf planet may exist at the edge of the solar system, possibly disproving Planet Nine's existence. This is the story of that newly encountered planet.

The Proba-3 mission, consisting of two spacecraft that fly in close formation to study the sun, has returned images of the first ever artificial solar eclipse ...