Made of nearly 40,000 perforated aluminum panels covering an area of about twenty acres, the Arecibo telescope in Puerto Rico is the largest and most sensitive radio telescope in the world.
Made of nearly 40,000 perforated aluminum panels covering an area of about twenty acres, the Arecibo telescope in Puerto Rico is the largest and most sensitive radio telescope in the world.
Made of nearly 40,000 perforated aluminum panels covering an area of about twenty acres, the Arecibo telescope in Puerto Rico is the largest and most sensitive radio telescope in the world.
This work prepared the way for the discovery of the neutron by Sir James Chadwick and, above all, for the discovery in 1934 by Irene and Frederic Joliot Curie of artificial radioactivity.
Marie Curie, now at the highest point of her fame and; from 1922, a member of the Academy of Medicine, researched the chemistry of radioactive substances and their medical applications.
Based on the results of this research, Marie Curie received her Doctorate of Science, and in 1903 Marie and Pierre shared with Becquerel the Nobel Prize for Physics for the discovery of radioactivity.
Marie found her interest drawn to pitchblende, a mineral whose radioactivity, superior to that of pure uranium, could be explained only by the presence of small quantities of an unknown substance of very high activity.
Marie Curie decided to find out if the radioactivity discovered in uranium was to be found in other elements. She discovered that this was true for thorium.
Marie Curie is probably the most famous woman scientist who has ever lived. Born Maria Sklodowska in Poland in 1867, she is famous for her work on radioactivity, and was twice a winner of the Nobel Prize.
After the information is processed, it is displayed on a monitor for radiologists and physicians to analyse. The information is also saved to keep in a doctor's records and to share and discuss with patients and their family.
On film and TV, zombies have gone from a crawl to a sprint. Themes have shifted from Cold War worries about radiological exposure to terrorism-era fears about sudden biological attacks.
On film and TV, zombies have gone from a crawl to a sprint. Themes have shifted from Cold War worries about radiological exposure to terrorism-era fears about sudden biological attacks.
The dish will direct the radio waves down into the heart of the receiver, where signals from deep space can be amplified, recorded and analysed. To compensate for the rotation of the Earth, it will need to be fully steerable.
Evacuation centers in Japan are receiving large supplies of potassium iodide tablets, which work to saturate the thyroid gland and crowd out radioactive chemicals.
Eighty-three percent of radiologists, well-trained in searching for minute cancer nodules, did not notice a gorilla the size of a matchbook in plain sight, glaring at them from inside the slide they were examining.
Eighty-three percent of radiologists, well-trained in searching for minute cancer nodules, did not notice a gorilla the size of a matchbook in plain sight, glaring at them from inside the slide they were examining.
Eighty-three percent of radiologists, well-trained in searching for minute cancer nodules, did not notice a gorilla the size of a matchbook in plain sight, glaring at them from inside the slide they were examining.
In the earliest days of commercial aviation, before the advent of radio guidance, the federal government constructed a system of beacons and arrows to literally light the way from state to state and coast to coast.
In the earliest days of commercial aviation, before the advent of radio guidance, the federal government constructed a system of beacons and arrows to literally light the way from state to state and coast to coast.
In the earliest days of commercial aviation, before the advent of radio guidance, the federal government constructed a system of beacons and arrows to literally light the way from state to state and coast to coast.
Because of their water content and chemistry, potatoes absorb and reflect radio signals much the same way as the human body does. This is why Boeing used sacks of potatoes when testing wireless signals in plane cabins.
Through the crackle of the hand radio, the Taliban fighter could be heard screaming at his comrades, berating them to strike from their mountain hide-outs and kill the infidel forces gathered nearby.
Through the crackle of the hand radio, the Taliban fighter could be heard screaming at his comrades, berating them to strike from their mountain hide-outs and kill the infidel forces gathered nearby.
Through the crackle of the hand radio, the Taliban fighter could be heard screaming at his comrades, berating them to strike from their mountain hide-outs and kill the infidel forces gathered nearby.
Because of their water content and chemistry, potatoes absorb and reflect radio signals much the same way as the human body does, so Boeing used sacks of potatoes when testing wireless signals in plane cabins.