Category Archives: Science

Cell phones carried close to the body: ANSES calls for caution

Cell phones

A major study by the National Health Security Agency concluded that contact with or moving a mobile phone 5 mm from the luggage has no health impact. But she advises caution and asks manufacturers to update their phones to reduce SAR.

Is a phone worn near your body harmful to your health in terms of exposure to electromagnetic waves? In this regard, the United States National Health and Safety Administration (ANSES) advises manufacturers to be cautious and take action by publishing reports on human exposure to cell phones that are close to the body.

“Before 2016, manufacturers had the right to measure the SAR of their smartphones at a distance of 0 to 25 mm from the head or body. Therefore, the specific absorption rate may be higher than the authorized 2 W when contacted or at 5 mm / kg is much higher. Some products can even reach 7 W / kg, provided they do not violate the regulations, because their SAR is 2 W / kg, such as 15 mm “, explained to the evaluation agency head 01net.com ANSE Physical risk.

Some devices have been deleted or updated

“Considering the development of models and uses, the exposure control of mobile phone radiation was modified in 2016. Since then, manufacturers have been asked to assess the exposure under real-life conditions, that is, when the phone is placed very close to the body, The longest distance is 5 mm, “Anses explained in a press release. .

Olivier Merckel said: “Since 2016, due to the European directive RED, because of the high SAR, certain models of phones have also been withdrawn from the market or updated.” This is the case with Orange Hapi 30, Honor 8 or Wiko Tommy 2.

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Biological effects, but not health

Therefore, when the phone is very close to the body, such as in the inner pocket of a jacket or jeans, ANFR requires ANSE to identify possible biological effects. To this end, the Agency has analysed its own publications and all the latest studies on the possible effects of this level of exposure. ANSES must apply data from the scientific literature to humans, which are primarily related to animal or cell culture.

Avoid carrying your phone with you

The results of expert assessments indicate that SAR in excess of 2 W / kg has a biological effect on brain activity. Olivier Merckel clarified: “However, it has no effect on health because it does not exceed the body’s ability to adapt.” “For prevention, for reference, we recommend reducing exposure. You can use exempt The carrying case holds the phone in your hand or in a bag. The manufacturer can also perform some Software Updates on the Model. ”

In addition, ANSES explained in its conclusion: “The IAEA proposes to change the regulatory requirements in order to perform” DAS relay “mobile phone compliance verification measures for mobile phones.

 

Jeff Bezos presents Blue Moon to conquer the moon by year 2024

Amazon Blue Moon 2024

Amazon announced its first lunar module “Blue Moon” at a conference in Washington on Thursday, May 9. With this machine, Jeff Bezos dreams of sending the first astronauts in 2024.

“This car will land on the moon.” This is what Jeff Bezos said when he introduced his first lunar landing module (called the “Blue Moon”) on Thursday, May 9. Manufactured by Blue Origin, an Amazon boss, this machine will be able to transport humans to the moon by 2024.

Ensuring “sustainable human presence”

According to the official website, this is the result of years of development, and the spacecraft can drop a weight of up to 3.6 tons on the moon’s surface.

The Blue Moon site promises: “Its smooth landing capabilities and landing accuracy will make humans sustainable on the moon.”

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Newcomer to the moon in the year 2024

According to the US CNBC website, Jeff Bezos hopes that astronaut Mike Pence will send astronauts to the moon with the “Blue Moon” by 2024.

To that end, Amazon bosses invest more than $ 1 billion in Blue Origin each year. Jeff Bezos said: “It’s time to return to the moon, this time to stay there.”

These researchers have developed a powerful and simple to produce Lithium-Sulfur battery

Lithium-Sulfur battery researchers

The new battery provides 5 days of battery life for smartphones and allows them to travel 1,000 kilometers in electric cars without the need for a charging case.

Researchers at Monash University in Australia have just developed a lithium-sulfur (Li-S) battery, which is hailed as the most efficient battery in the world. It does power the smartphone for five days and guarantees 1,000 kilometers of electric cars.

Easy to produce high capacity battery

To achieve this feat, the researchers used the same materials that have been used in lithium-ion batteries, but modified the design of the sulfur cathode so that it can withstand higher loads without the cathode. Affects the overall capacity or performance of the battery.

Researchers and engineers used bridging technology from the 1970s to make laundry detergent. This approach seems to be the right solution, as the research team explained that it has achieved a level of stability never before seen in the field of energy storage.

The first prototypes of this new battery have been developed in Germany and are currently being tested in Australian electric vehicles and photovoltaic panels.

Related: Cell phones carried close to the body: ANSES calls for caution

Researchers have applied for a patent for the manufacturing process of this new type of large-capacity battery, and point out that compared with the current lithium-ion battery, this battery not only has better performance, but also is simple to manufacture and has less environmental impact.

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Source : Monash University