The Florida State University-headquartered National High Magnetic Field Laboratory has shattered another world record with the testing of a 32-tesla magnet—33 percent stronger than what had previously been the world's strongest superconducting magnet used for research and more than 3,000 times stronger than a small refrigerator magnet.
Monday, January 22, 2018
Monday, December 25, 2017
A quick browse shows EdX to have more academic type courses of interest to high school and university students. However Coursera and FutureLearn also have interesting courses. The latter tends to have shorter, less demanding but unusual courses.
Many introductory courses start in September. For example there is the course "Preparing for the AP Physics 1 Exam" which is intended to "bridge the college readiness gap". Fairly basic physics but good videos etc. There are similar courses for other subjects. This has been available since 2014 at least.
Monday, November 27, 2017
Terrestrial gamma flashes were discovered about two decades ago. When lightning strikes, electrons are accelerated to very high energies and crashing into air molecules, causing an explosion of gamma radiation, the so-called terrestrial gamma flashes.More recetly it was discovered that some of these gamma rays can have enough energy to produced antimatter. See this report:
...researchers from Japan describe how gamma rays from lightning react with the air to produce radioisotopes and even positrons—the antimatter equivalent of electrons.
Sunday, October 29, 2017
According to a report in Science Daily:
"A small, recently discovered asteroid -- or perhaps a comet -- appears to have originated from outside the solar system, coming from somewhere else in our galaxy. If so, it would be the first "interstellar object" to be observed and confirmed by astronomers"
Thursday, September 28, 2017
"The Sun's level of activity goes up and down in an 11-year cycle: sometimes it produces a ton of large flares, and sometimes it's pretty quiet. Every solar cycle, the Sun delivers a few standout punches. This current solar cycle, however, is the quietest in the last 100 years. It's pretty notable that such a large flare came out of such a calm period."
Questions for discussion: what is a solar flare? Why are they important to us?
See also Wikipedia.
Tuesday, August 29, 2017
"The eleven subject areas where Guyana’s “performance did not measure up when compared with last year’s performance were: Biology, English A, English B, ... Integrated Science, Physics, ... Human & Social Biology, and Additional Mathematics."With regard to these subjects the Minister said:
'“We therefore recognise that these performances indicate that appropriate measures have to be taken to ensure overall improved performance in all subject areas,” the Minister of Education stated.'Performance in Mathematics was said to be "consistent".
Friday, July 28, 2017
|Image from Guyana Chronicle|
The young Guyanese team...placed 10th after battling against 164 other countries from around the globe. The achievement by the nine-member team is phenomenal, considering that they had only four months to prepare for a competition which was new to them. However, their achievement is being celebrated by the Guyanese population.The First Global web site gives some background:
FIRST Global organizes a yearly international robotics challenge to ignite a passion for Science, Technology, Engineering, and Mathematics (STEM) among the more than two billion youths across the world.but has little regarding the outcomes of the event.