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General physics/quantum physics [ edit ] Perform a loophole-free Bell test experiment (1970 [ 100 ] –2015): In October 2015, scientists from the Kavli Institute of Nanoscience reported that the failure of the local hidden-variable hypothesis is supported at the 96% confidence level based on a "loophole-free Bell test" study.
The current version is a revised version of the original 1960 textbook Physics for Students of Science and Engineering by Halliday and Resnick, which was published in two parts (Part I containing Chapters 1-25 and covering mechanics and thermodynamics; Part II containing Chapters 26-48 and covering electromagnetism, optics, and introducing ...
This is a list of noteworthy publications in physics, organized by type. General audience. List of books on popular physics concepts; Textbooks. List of textbooks on ...
By the 1980s, the question of whether the Higgs field existed, and therefore whether the entire Standard Model was correct, had come to be regarded as one of the most important unanswered questions in particle physics. The existence of the Higgs field became the last unverified part of the Standard Model of particle physics, and for several ...
[11] [12] While the reliability of Wikipedia was frequently criticized in the 2000s, it has improved over time, receiving greater praise from the late 2010s onward [3] [13] [14] while becoming an important fact-checking site. [15] [16] Articles on breaking news are often accessed as sources for frequently updated information about those events ...
The last of the non-avian dinosaurs died 66 million years ago in the course of the Cretaceous–Paleogene extinction event, whereas the earliest members of the genus Homo (humans) evolved between 2.3 and 2.4 million years ago. This places a 63-million-year expanse of time between the last non-avian dinosaurs and the earliest humans.
Richarz and Krigar-Menzel (1898) attempted a repetition of the Cavendish experiment using 100,000 kg of lead for the attracting mass. The precision of their result of 6.683(11) × 10 −11 m 3 ⋅kg −1 ⋅s −2 was, however, of the same order of magnitude as the other results at the time. [27]
In 2002, PayPal was acquired by eBay for $1.5 billion in stock, of which Musk—PayPal's largest shareholder with 11.7% of shares—received $176 million. [75] [76] In 2017, more than 15 years later, Musk purchased the X.com domain from PayPal for its "sentimental value". [77] [78] In 2022, Musk discussed a goal of creating "X, the everything ...