Hubble's law Created 2025-06-17 Updated 2025-07-16
Mullard Radio Astronomy Observatory Created 2025-06-17 Updated 2025-07-16
British Pathé Created 2025-06-17 Updated 2025-07-16
Quasar Created 2025-06-17 Updated 2025-07-16
Radio telescope Created 2025-06-17 Updated 2025-07-16
Antony Hewish Created 2025-06-17 Updated 2025-07-16
Radio astronomy Created 2025-06-17 Updated 2025-07-16
Radio astronomy is cool because it revealed:The 1974 Nobel Prize in Physics was awarded for pioneering radio astronomy from the late 40s onwards done at the University of Cambridge which was an epicenter of early research in that area, leading to the creation of the Mullard Radio Astronomy Observatory in 1958.
- some very interesting new types of astronomical objects that were not as noticeable in the visible spectrum notably:
- quasars: quasars are extremely redshifted, which means by Hubble's law that they are very far from Earth, so the fact that we could see them at all meant they must have produced immense amounts of light
- pulsars: scientists thought they had found extraterrestrial life when they saw these regularly pulsating signal sources!
- cosmic microwave background which is a major evidence for the Big Bang
- radio wavelengths penetrate Earth's atmosphere better than the visible spectrum making it easier to make ground-based observations
Astronomer Created 2025-06-17 Updated 2025-07-16
SQLite import JSON Created 2025-06-12 Updated 2025-07-16
A Structure for Deoxyribose Nucleic Acid Created 2025-06-12 Updated 2025-07-16
Starting line:The Eighth Day of Creation explains the "salt" part as that was the usual way to prepare DNA for X-ray crystallography, where something binds with the phosphate groups of DNA
We wish to suggest a structure for the salt of deoxyribose nucleic acid (D.N.A,). This structure has novel features which are of considerable biological interest.
The paper then shoots down other previously devised helical structures, notably some containing 3 strands or phosphate on the inside.
Then they briefly describe their structure, and promise more details on future articles. This was mostly a short one-page priority note.
Then they drop their shell bomb conclusion:
It has not es~aped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material.
Both Wilkins and Rosalind Franklin are acknowledged at the end.
Two sum problem Created 2025-06-12 Updated 2025-07-16
Standard input Created 2025-06-12 Updated 2025-07-16
Paper by Watson and Crick Created 2025-06-12 Updated 2025-07-16
NP-hard cryptosystem Created 2025-06-12 Updated 2025-07-16
This is natural question because both integer factorization and discrete logarithm are the basis for the most popular public-key cryptography systems as of 2020 (RSA and Diffie-Hellman key exchange respectively), and both are NP-intermediate. Why not use something more provenly hard?
- cs.stackexchange.com/questions/356/why-hasnt-there-been-an-encryption-algorithm-that-is-based-on-the-known-np-hard "Why hasn't there been an encryption algorithm that is based on the known NP-Hard problems?"
Subset sum problem Created 2025-06-12 Updated 2025-07-16
Longest common subsequence Created 2025-06-12 Updated 2025-07-16
Note that the subsequences do not need to be contiguous.
Implementations:
K-th largest element in an array Created 2025-06-12 Updated 2025-07-16
Largest element in an array Created 2025-06-12 Updated 2025-07-16
MacArthur Fellows Program Created 2025-06-12 Updated 2025-07-16
Holy fuck what a eye watering amount, $800k over 5 years as of 2025, this is exactly what Ciro Santilli would need to push forward OurBigBook! He also fits the requirements quite well, as a "creative person". For Americans or US residents only though, sad. Outdated requirement given the Internet age.
Tribonacci Created 2025-06-12 Updated 2025-07-16
There are unlisted articles, also show them or only show them.