![]() Synchronization of clocks through 12 km of strongly turbulent air over a city. Synchronization of distant optical clocks at the femtosecond level. Atomic clock performance enabling geodesy below the centimetre level. A fermi-degenerate three-dimensional optical lattice clock. Gravitational wave detection with optical lattice atomic clocks. The unit of time: present and future directions. Towards the optical second: verifying optical clocks at the SI limit. Towards a redefinition of the second based on optical atomic clocks. The CIPM list of recommended frequency standard values: guidelines and procedures. A clock network for geodesy and fundamental science. The technique we report can not only be directly used in ground-based applications, but could also lay the groundwork for future satellite time–frequency dissemination. We observe that the stability we have reached is retained for channel losses up to 89 dB. Key technologies essential to this achievement include the deployment of high-power frequency combs, high-stability and high-efficiency optical transceiver systems and efficient linear optical sampling. Here we report time–frequency dissemination with an offset of 6.3 × 10 −20 ± 3.4 × 10 −19 and an instability of less than 4 × 10 −19 at 10,000 s through a free-space link of 113 km. However, previous attempts at free-space dissemination of time and frequency at high precision did not extend beyond dozens of kilometres 10, 11. As the frequency instability for state-of-the-art optical clocks has reached the 10 −19 level 8, 9, the vision of a global-scale optical network that achieves comparable performances requires the dissemination of time and frequency over a long-distance free-space link with a similar instability of 10 −19. Networks of optical clocks find applications in precise navigation 1, 2, in efforts to redefine the fundamental unit of the ‘second’ 3, 4, 5, 6 and in gravitational tests 7. Instructions to purchase: click the Buy Now link above, enter the Price indicated above, fill in the necessary details to purchase the required amount of slay dollars (store credits) to purchase this item and checkout.Free-space dissemination of time and frequency with 10 −19 instability over 113 km Standard international shipping takes up to 10-39 business days.Īll prices include complimentary worldwide shipping If item is ready to ship we will send it within 7-29 business days after payment confirmation. – All wallpapers will be printed using high quality Eco-friendly inks which provides a durable and strong finish with bright and accurate colors. – Your screen is not always an accurate image of color and colors, which may vary slightly It depends on the size of the finished panel and the texture that you choose – You get a ready-made panel, which consists of 2,3,4 panels. – All wallpaper with matte finish, except Exclusive (Silk) If you want to guarantee your wallpaper will stick we suggest applying a layer of primer to your wall. If you are painting your walls please ensure to wait at least 1 month before applying your wallpaper. You can clean your wall with a mixture of vinegar and water to remove any marks. Wall preparation is a key! Your surface must be clean and dry. Taking your measurements remember that not all walls are level ensure to add a bit extra to your measurements (top & bottom). Solar and iridescent texture Silk will not leave anyone indifferent and will please you every day. Images on this basis look bright and rich, suitable for floral themes and night scenery. *******EXCLUSIVE (SILK) + GLUE******* – Silk is a strong texture with a pleasant glossy sheen. This will make the colors even more saturated. *******VINYL WALLPAPER + GLUE + VARNISH******* – Such wallpaper may be varnished. *******VINYL WALLPAPER + GLUE******* – The base is made of high-density vinyl. They can be removed and repositioned easily. ![]() Maximum accurately convey the entire color palette of the drawing to the surface. They are very suitable for gluing even surfaces of a large area. *******SELF ADHESIVE material******* – Matte wallpaper with a nice texture have an adhesive base. We use 3 different types of materials when printing our wallpapers and murals. We have selected the best texture options for your wallpaper. Let us help you realize your original creative ideas, change the perception of space and recreate a stylish design.
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