SkyFi卫星地球视图
Explore earth satellite views and eventually order a custom image based on existing image or an update live shot (yes you can) of your desired area.The browser is there to permit to select precisely the desired area. As such it is extremely precise, without any cloud, but has no time/date info as it aggregates many […]
Radiaverse 辐射图
An interactive worldwide radioactivity / radiations map made by customers of the “RadiaCode” connected products recording their local area/path automatically tagging the GPS coordinates. Not fully scientific calibrated instruments, but interesting as a curiosity before investigating more. Note their disclaimer advise: Emergency and Reporting If you find a suspicious object that is not a naturally […]
CentipedeRTK 免费实时 GNSS 基站地图
CentipedeRTK is a collaborative network of open GNSS bases available to anyone within the coverage area. The network is extended by public institutions, individuals, private actors such as farmers, and other public partners.Initially a French initiative, now well implemented also in Hungary and Switzerland, plus a few bases in Europe and North America.If you need […]
RTK2go 免费社区 NTRIP 播报器，用于 RTK 实时校正
A free, cloud-based community NTRIP Caster that serves as a central hub for distributing high-precision GNSS correction data. Built on the professional-grade SNIP Caster software, the platform allows individual base station operators to “push” their RTK (Real-Time Kinematic) correction streams to a public server, making them accessible to any number of “rover” clients over the […]
免费SVG地图
A lot of free SVG maps of world, countries or regions, ready to be downloaded and used on any website or support. Be sure to read the license details (short version: free to use, including commercial, with attribution)
免费在线 FEM
免费有限元分析软件的在线版本。专为专家打造。
Matweb 材料属性数据库
By fast the most complete freely accessible material properties database. For metals, plastics, ceramics, and composites, although plastics is where it really shines. Many datasheets also included. Typically:Physical Properties such asDensityLinear Mold ShrinkageMelt Flow indexAsh %Mechanical Properties such asHardness, Rockwell RTensile Strength at BreakTensile Strength, YieldElongation at BreakElongation at YieldTensile ModulusFlexural StrengthFlexural ModulusIzod ImpactThermal PropertiesDeflection […]
二维结构有限元分析（FEA）
Define your structure by telling your points and spans, then apply your various forces, and constraints. It will then calculate efforts in your structure. You can save you inputs for future use or variants.
柱屈曲计算器
典型的屈曲计算器，需要定义两端、长度和横截面，以及材料和压缩载荷。
部分属性计算器
The Tefugen FEA calculator is a cloud-based engineering utility designed to perform Finite Element Analysis on mechanical components to predict physical responses to external forces. The service facilitates the simulation of structural stress, deformation, and thermal distribution by applying numerical methods to discretized geometric models. By processing user-defined inputs—including material properties like Young’s modulus, boundary […]