Cacti cannot protect computer users from electromagnetic emissions, National Taiwan University of Science and Technology professor of electronic engineering Hsiao Hung-chin (蕭弘清) said, debunking stories circulating online about their efficacy.
Although stories about electromagnetic wave shielding provided by “energy crystals” and cacti have long proliferated online, they do not have any scientific basis, Hsiao said.
It is widely accepted that maintaining a distance of 50cm from devices helps reduce exposure to electromagnetic waves, he said.
The idea that cacti can help remind people to keep a distance between themselves and their computer — as people tend to avoid the thorns — may be the source of the myth, Hsiao said.
The only way to be completely insulated from electromagnetic emissions from devices is to stop using them, but the solution is “a practical impossibility,” he said.
“The second-best solution is for people to keep a distance from electronic devices,” he said. “If it is not necessary, people should not be glued to their smartphones and should use the speaker for calls to reduce exposure to electromagnetic waves.”
Improving posture, reducing device usage and keeping distance from computers are better ways to mitigate risk than trusting rumors about crystals or cacti, Hsiao said.
Taiwan is to receive the first batch of Lockheed Martin F-16 Block 70 jets from the US late this month, a defense official said yesterday, after a year-long delay due to a logjam in US arms deliveries. Completing the NT$247.2 billion (US$7.69 billion) arms deal for 66 jets would make Taiwan the third nation in the world to receive factory-fresh advanced fighter jets of the same make and model, following Bahrain and Slovakia, the official said on condition of anonymity. F-16 Block 70/72 are newly manufactured F-16 jets built by Lockheed Martin to the standards of the F-16V upgrade package. Republic of China
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