Two competing theories, shock drift acceleration (SDA) and shock surfing acceleration (SSA), have emerged, but observational limitations in space and previous lab experiments have left the question ...

Fram2's orbit flew Dragon on a north-to-south trajectory in low Earth orbit at an altitude of about 271 miles (437 kilometers ...

“Our Army must transform now to a leaner, more lethal force by infusing technology, cutting obsolete systems and reducing ...

That would mean the simulation rendered reality at the time of observation once the file was opened and not when observed by ...

Presenter 2: In this film, we will look at how to collect valid measurements when we carry out an experiment. Presenter 1: For example, I want to investigate the distance a car travels when the ...

In many settings, however, such experiments are expensive and time consuming. Hence, it is desirable to obtain causal information from observational data, that is, from data obtained by observing ...

Ideas from observations are developed into questions ... Write a hypothesis and prediction for the apple experiment below, and carry it out to see the results.To help, think what can be used ...

This research group's successful observation of Dirac EPs, which are brought by Hermitian-like symmetry into non-Hermitian systems, could soon inspire new experimental work in the field.

China's Tiandu-1 satellite successfully conducted a first-of-its-kind laser ranging experiment in Earth-moon space under ...

This paper reviews two previous soil erosion research projects in the Ecuadorian Andes involving field observations and small-plot rainfall simulation experiments and provides examples of ...