China"s firstmaroon wristbands successful Lunar Laser Ranging accomplishedIt"s Not A Worry To Create Beautiful One Of Every Kind Customized Gifts There lots of different pores and skin promotional gifts that may give towards the customers. In fact, cellular phone gifts that you are able give number in the hundreds, not really thousands. If you"re able to put your clientele and logo on something, then might give it away as the promotional gift. What makes the best promotional gift rustic, handcrafted lighting? Are promotional pens as good as promotional golf pool balls? I will be the promotion gifts industry for longer than 20 many would prefer to offer that you few aspects to consider before placing your order for promotional torches. As at as the price range, these bobblehead dolls average from $70 to many hundred . It depends on how life-like you want them to often be. It is money well spent when you obtain the final product. People enjoy these little dolls. No matter if an individual might be young or old. Usually are very well fun perform with and also comical to look at. Photo totes and bags are great way deliver custmo gifts. The photo is woven in the process regarding just stamped on top. This makes to enjoy a durable tote that will wear well and last. Totes go in several sizes so the sure to obtain one which matches the person you are purchasing for. Whether camouflage baby clothes or rockstar baby clothes the vital thing will be the quality and material where these are formulated from. This definitely awesome to give these cool gifts but be sure that realizing what"s good come on top of the greatest. Remember that baby skin is sensitive so materials made from 100 percent cotton nonetheless the suitable for them. That"s right, it"s a pen, but it"s much, much cooler than just a pen. Neglect the desk-sets of years past years. Tactical pens don"t just write. They"re self-defense tools too. The examples above show just how creative and thoughtful cut with your promotional the right gifts. These are only some of the many options you"ve that are matched to the involving IT and web-based technology, but the list is huge.
BEIJING -- China has accomplished its first successful Lunar Laser Ranging (LLR), with a 1.2-meter telescope laser ranging system.
Based on the signals of laser pulses reflected by the lunar retro-reflector planted by the US manned mission Apollo 15, the applied astronomy group from the Yunnan Observatories measured the distance between the Apollo 15 retro-reflector and the Yunnan Observatories ground station to be 385823.433 kilometers to 387119.600 kilometers, from 9:25 pm to 10:31 pm Beijing Time, on Jan 22, 2018.
Theoretically, LLR measures the distance between the Earth and the moon by calculating the time a laser pulse takes to travel from a ground station on Earth to a retro-reflector on the moon and back again.
LLR technology traverses fields such as laser and photoelectric detection, automatic control and space orbiting. Compared to other methods, LLR can achieve the highest accuracy of distance measurement between the Earth and the moon.
"Although LLR in China has not achieved the same level as pioneering countries like the US, our initial success still means the progress, which started from scratch," said Li Yuqiang, an associate researcher with Yunnan Observatories.
Results of LLR are vital to advanced research in astro-geodynamics, Earth-moon system dynamics and lunar physics. Until China made its first LLR, only the United States, France and Italy had successfully harnessed the technology.
The LLR was conducted in the context of China preparing to launch the Chang"e-4 lunar probe in 2018. The lunar probe will undertake the first soft landing on the far side of the moon, conduct in-situ and roving detection, as well as relay communication at the Earth-moon Lagrangian 2 (L2) point.
"In the near future, China will plant its own retro-reflector on the moon, which will further boost the development of LLR in China," Li said.