Results 281 to 290 of about 729,138 (319)
Some of the next articles are maybe not open access.
Advances in Health Sciences Education
In this editorial the editor looks into holes in scholarship in the field of health professions education and their implications for understanding and developing the field.
openaire +2 more sources
In this editorial the editor looks into holes in scholarship in the field of health professions education and their implications for understanding and developing the field.
openaire +2 more sources
Dumb holes: analogues for black holes
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2008The use of sonic analogues to black and white holes, called dumb or deaf holes, to understand the particle production by black holes is reviewed. The results suggest that the black hole particle production is a low-frequency and low-wavenumber process.
openaire +2 more sources
Science, 2021
Now that black holes can be studied directly, scientists wonder whether they really are the strange beasts Albert Einstein's theory predicts.
openaire +2 more sources
Now that black holes can be studied directly, scientists wonder whether they really are the strange beasts Albert Einstein's theory predicts.
openaire +2 more sources
A hole in the heart: a hole in the head?
Archives of Disease in Childhood, 2011A physiological left-to-right shunt through a patent foramen ovale (PFO) can be demonstrated in 32–55% of young adults with unexplained stroke compared with 10–35% of the general population.1 Transoesophageal or transthoracic echocardiographic evidence of a PFO consists of demonstration of a defect in the wall between the atria and ideally the passage ...
F. J. Kirkham +2 more
openaire +1 more source
From Black Holes to White Holes: A Hole or a Gateway
This paper explores the theoretical connection between black holes and white holes, proposing that black holes may serve as gateways to other cosmic structures. The study focuses on the implications of general relativity and the potential existence of white holes in the ...openaire +1 more source
2009
Abstract A black hole is an object that is inside its event horizon at r=r*: a one-way surface that particles and light can only traverse inward. This chapter studies the spherically symmetric nonrotating Schwarzschild black hole. The metric elements change their respective signs when crossing from r>r∗ to r<r*, leading to ...
openaire +1 more source
Abstract A black hole is an object that is inside its event horizon at r=r*: a one-way surface that particles and light can only traverse inward. This chapter studies the spherically symmetric nonrotating Schwarzschild black hole. The metric elements change their respective signs when crossing from r>r∗ to r<r*, leading to ...
openaire +1 more source
Calculating black hole shadows: Review of analytical studies
Physics Reports, 2022Oleg Tsupko, Volker Perlick
exaly
Unlocking the Full Potential of Electron‐Acceptor Molecules for Efficient and Stable Hole Injection
Advanced Materials, 2023Hirohiko Fukagawa +2 more
exaly