PrismMirror

Acrylic quarter dome (eighth of a sphere) convex mirror, for installation in a 90-degree corner. Indoor use only. This mirror is not designed for outdoor use.

The .gov means it’s official. Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

This convex mirror helps improve safety by eliminating blind spots. Use this mirror in a room, a hallway, a driveway, an entryway or an aisle to prevent accidents, theft, etc.

45degree mirror

Solutions of 3-D elliptic PDEs form the basis of many mathematical models in medicine and engineering. Solving elliptic PDEs numerically in 3-D with fine discretization and high precision is challenging for several reasons, including the cost of 3-D meshing, the massive increase in operation count, and memory consumption when a high-order basis is used, and the need to overcome the "curse of dimensionality." This paper describes how these challenges can be either overcome or relaxed by a Tensor B-spline methodology with the following key properties: 1) the tensor structure of the variational formulation leads to regularity, separability, and sparsity, 2) a method for integration over the complex domain boundaries eliminates meshing, and 3) the formulation induces high-performance and memory-efficient computational algorithms. The methodology was evaluated by application to the forward problem of Optical Diffusion Tomography (ODT), comparing it with the solver from a state-of-the-art Finite-Element Method (FEM)-based ODT reconstruction framework. We found that the Tensor B-spline methodology allows one to solve the 3-D elliptic PDEs accurately and efficiently. It does not require 3-D meshing even on complex and non-convex boundary geometries. The Tensor B-spline approach outperforms and is more accurate than the FEM when the order of the basis function is > 1, requiring fewer operations and lower memory consumption. Thus, the Tensor B-spline methodology is feasible and attractive for solving large elliptic 3-D PDEs encountered in real-world problems.

This convex mirror is made of lightweight, flexible and durable acrylic, with a black vinyl frame. The mirror has an open top. This mirror features a flange for ceiling mounting. The flange has three pre-drilled mounting holes reinforced with metal brackets. (Screws and bolts not included).

Mirrors Optics

Maintenance: This first surface mirror has an exposed reflective coating that is not protected by glass. To protect this coating, the manufacturer recommends cleaning the mirror with furniture polish. Do not use glass cleaning products. They could damage the reflective coating.

Flatmirror

The PubMed wordmark and PubMed logo are registered trademarks of the U.S. Department of Health and Human Services (HHS). Unauthorized use of these marks is strictly prohibited.

SIZING INFORMATION: The nominal sizes represent the diameter of the full dome from which the quarter dome mirror has been cut, not the length of the mirror’s circular arc. For instance, a nominal 20-inch quarter dome mirror is 10 inches high, 10 inches across and 10 inches deep, with a circular arc of about 15 inches.

The site is secure. The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.