Technical description

Steps to drill holes in a Wooden plank. Step 1: Measure and Mark Measure the location of the hole. If possible, mark exactly where the hole needs to be drilled.  Choose the drill size appropriate to the material being drilled and the tool being used.  Step 2: Center Punch A center punch makes a small dent in the surface of the material that prevents the drill from wandering when it first contacts the surface. Step 3: Set Up Align and clamp the material in place.  Note:  Clamps are always a good idea. As the drill pierces through the opposite side of the material, it can grab and spin the work piece.   Warning:  If you are holding the material by hand, injury can result. Be especially careful of this when using a hand drill. If the drill bit grabs, the entire tool can be ripped out of your hands. Step 4: Drill Caution:  Put on safety glasses and ear protection as appropriate. Let som...

Technical Description of a Microscope: Definition: A microscope   is a device that uses lenses to make very small objects look larger ,so that they can be scientifically examined and studied. Components: The components of a microscope are classified into two categories: 1) Structural  components: Head/Body : It houses the optical parts in the upper part of the microscope. Base : The base of the microscope supports the microscope and houses the illuminator. Arm : It connects to the base and supports the microscope head. It is also used to carry the microscope. 2) Optical components: Eyepiece or Ocular:  Eyepiece or Ocular is what you look through at the top of the microscope. Typically, standard eyepieces have a magnifying power of 10x.  Eyepiece:  Eyepiece Tube holds the eyepieces in place above the objective lens.  Objective lens:  Objective Lenses are the primary optical lenses on a microscope. They range from 4x-100x...