// ADD the JFace Viewer as a Selection Provider to the View site. getSite().setSelectionProvider(viewer); } 这个view将它创建的TableViewer注册为selection provider是因为: 1 这个view将使用tableviewer来显示信息,用户将与TableViewer交互 2 TableViewer实现了selection provider接口,可以将选择事件发布到workben...
OK, you want to view the Sun or an eclipse, but you don’t have an approved solar filter for your telescope. Maybe you don’t even have a telescope. No problem! I’ll bet you have a cardboard box. That and a few common supplies will let you build a pinhole camera/viewer that yo...
Place the lid back on the box. Watch the eclipse (Image credit: Live Science) To test your viewer, take it outside on a sunny day and hold the shoebox so that it lines up with its own shadow, aligning with light from the sun. Stand so that when you look through the viewing hole,...
Why do you need a special viewer for the total solar eclipse? Eye protection during the eclipse is important to prevent eye damage. "If someone briefly looks at the eclipse if it's extremely brief, in some cases there won't be damaged but damage can happen even within a fraction ...
How to make a box eclipse viewer The second kind of eclipse viewer works in the same way, but the projection appears inside a box instead of on the ground. For this, you need paper, foil, scissors and a cardboard box – a cereal box or shoe box will work well. ...
This is what is called a "pinhole viewer". You stand with your back to the sun, so the Sun can shine through the hole with the foil. You look into the hole without the foil. You will see the sunlight shine on the white paper, and as the eclipse occurs, you will see the solar ...
"date_time" for "libboost_date_time" This module finds headers and requested component libraries OR a CMake package configuration file provided by a "Boost CMake" build. For the latter case skip to the :ref:`Boost CMake` section below. .. versionadded:: 3.7 ``bzip2`` and ``...
Hi I have some problems while installing sumo on centOS. In fact, I am not familiar with Linux environment... I follow the instruction by the otficial version: sudo apt-get install git cmake python3 g++ libxerces-c-dev libfox-1.6-dev lib...
OPTIONS -C <initial-cache> Pre-load a script to populate the cache. When cmake is first run in an empty build tree, it cre- ates a CMakeCache.txt file and populates it with cus- tomizable settings for the project. This option may be used to specify a file from which to load ...
Illinois is gearing up for a rare total solar eclipse on April 8, 2024. Protect your eyes from harm by wearing solar eclipse glasses OR by making this DIY projector.