athese precautions are necessary in order not to emit electromagnetic radiations at this binding since pulses carried out from the generator towards the clamp can reach several hundred volts with fast front edges 这些防备措施是必要为了不散发电磁辐射在这捆绑从从发电器执行的脉冲往钳位可能到达几百伏特...
Similar reasoning led Stephen Hawking to propose that black holes must emit a form of radiation - and we have good evidence that they do. Hawking radiation results from apparently empty space gaining some energy due to the uncertainty principle. This is converted into a pair of short-lived part...
a"We know that exposure to ultraviolet radiation is a significant risk factor in the development of skin cancer and tanning units emit artificial UV up to several times greater than the strength of the midday sun," Mr Sartor said. “我们知道对紫外线辐射的暴露是重大风险因素在皮肤癌的发展,并且...
in general, a smaller particle will emit a shorter wavelength of light than the next larger size. 根据他们的大小, QDs,被激发在适当的波长,将散发光用不同的颜色。 一般来说,一个更小的颗粒比下更大的大小将散发光一个更短的波长。 [translate] a雨天让我感到忧伤 The rainy day lets me feel sad ...
These cars are designed to fuel-efficient than traditional gas-powered vehicles and emit less pollution, the environment has a positive impact on the planet buying a used hybrid car is an excellent choice. Hybrid is a combination of gasoline and electricity to power the engine, achieving much ...
Vote up the leaps in logic that are too big to ignore. All movies require a bit of suspended disbelief, but some stories wrap up with a few too many unanswered questions. There are some major plot holes in '90s movies, for example, that fans have let slide for decades. These l...
Cell phones, as well as radio towers and Wi-Fi networks, emit radio frequency waves, which are absorbed by human tissue and measured using the Specific Absorption Rates (SARs) scale. [Read: Which Five Phones Have the Lowest Radiation Levels?] Medical x-rays Because medical procedures make up...
M17 is a large star-forming region. It’s been the home for three star-forming events, but the stars created are mostly hidden behind the molecular cloud. The massive stars it made emit UV radiation that excites the hydrogen gas to form the emission nebula. It’s located in the Milky Wa...
Type of radiation and shielding: Uranium and its decay elements emit Alpha particles, Beta particles and Gamma rays. Paper, skin and a few centimeters of air stop Alpha particles. Thin layers of plastic, metal or even a small block of wood will stop Beta particles. Nothing totally stops Gamm...
It is a type of electromagnetic radiation that carries energy and enables us to see. When light interacts with matter, it can be absorbed, reflected, or refracted, demonstrating its ability to transfer energy. This energy is essential for various processes in the natural world, such as ...