Oncology & Cancer

Scientists to improve cancer treatment effectiveness

Together with researchers from the University of Nantes and the University of Reims Champagne-Ardenne in France, experts from the National Research Nuclear University MEPhI have recently developed a quantum dot-based microarray ...

Oncology & Cancer

Label-free method for rapid cancer diagnosis

Researchers at Ruhr-Universität Bochum have deployed a novel infrared (IR) microscope with quantum cascade lasers in order to analyse tissue samples taken during routine clinical procedures for colorectal cancer diagnosis. ...

Oncology & Cancer

Scientists develop novel 'dot' system to improve cancer detection

Researchers at Sanford Burnham Prebys Medical Discovery Institute (SBP) have developed a proof-of-concept nanosystem that dramatically improves the visualization of tumors. Published today in Nature Communications, the platform ...

Neuroscience

Researcher develops light-based tools to study the brain

When the brain is at work, large numbers of neurons within it interact rapidly, passing messages, sometimes across large distances. The most recent addition to Rockefeller University's faculty, Alipasha Vaziri, devises optical ...

Diseases, Conditions, Syndromes

A simple diagnostic test to detect tuberculosis in humans

Tuberculosis (TB) represents a growing worldwide healthcare burden. Second only to HIV in terms of its global impact, TB infected 8.5 million people and caused 1.4 million deaths in 2011. If these statistics are to improve, ...

Neuroscience

Capturing brain activity with sculpted light

Scientists at the Campus Vienna Biocenter (Austria) have found a way to overcome some of the limitations of light microscopy. Applying the new technique, they can record the activity of a worm's brain with high temporal ...

Diseases, Conditions, Syndromes

Moving toward a faster, simpler Hendra virus detection system

(Medical Xpress)—CSIRO scientists, in collaboration with researchers at the Bio21 Institute at the University of Melbourne, have developed a new method which could pave the way for a portable Hendra virus biosensor.

Cardiology

Neonatal heart stem cells may help mend kids' broken hearts

Researchers at the University of Maryland School of Medicine, who are exploring novel ways to treat serious heart problems in children, have conducted the first direct comparison of the regenerative abilities of neonatal ...

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Quantum

In physics, a quantum (plural: quanta) is an indivisible entity of a quantity that has the same units as the Planck constant and is related to both energy and momentum of elementary particles of matter (called fermions) and of photons and other bosons. The word comes from the Latin "quantus", for "how much." Behind this, one finds the fundamental notion that a physical property may be "quantized", referred to as "quantization". This means that the magnitude can take on only certain discrete numerical values, rather than any value, at least within a range. There is a related term of quantum number.

A photon is often referred to as a "light quantum". The energy of an electron bound to an atom (at rest) is said to be quantized, which results in the stability of atoms, and of matter in general. But these terms can be a little misleading, because what is quantized is this Planck's constant quantity whose units can be viewed as either energy multiplied by time or momentum multiplied by distance.

Usually referred to as quantum "mechanics", it is regarded by virtually every professional physicist as the most fundamental framework we have for understanding and describing nature at the infinitesimal level, for the very practical reason that it works. It is "in the nature of things", not a more or less arbitrary human preference.

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