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24 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Is the length of the path travelled by light in vacuum during a time interval of 1 over 299,792,458 of a second |
Meter |
Old Definition |
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The symbol m, is the SI unit of length. It is defined by taking the fixed numerical value of the speed of light in vacuum c to be 299792458 when expressed in the unit 𝑚 𝑠 , where the second is defined in terms of the Cesium frequency ∆𝑣𝐶. |
Meter |
2019 Definition |
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Measuring Tools |
1. Divider 2. Retractable steel tape 3. Ruler 4. Vernier Caliper 5. Folding rule 6. Caliper |
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Marking tools |
1. Automatic chalk line 2. Pencil 3. Marking knife 4. Awl 5. Capiz shell |
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Directional or Guiding tools |
1. Sliding bevel 2. Square (large or small) 3. Combination square 4. Dovetail marker 5. Plumb bob 6. Level 7. Sliding bevel 8. Marking and Mortise gauge |
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The hard, fibrous material that forms the main substance of the trunk or branches of a tree. |
Wood |
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Inorganic, nonmetallic solids that remain hard when heated. |
Ceramics |
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Solid material that is typically hard, shiny, malleable, fusible and ductile, and with good electrical and thermal conductivities; readily loses electrons to form cations. |
Metal |
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Synthetic or semi-synthetic organic compounds made from a wide range of organic polymers that are malleable and thus moldable into solid objects while soft until set to a rigid or slightly elastic final form. |
Plastics |
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Material made from two or more different materials so combined to achieve a specific purpose and properties different from its component materials. |
Composites |
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Processes for Woods |
Cutting, Bending, Shearing, Drilling, Lathing, Grooving |
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Processes for Metal |
Welding , Cutting , Bending , Shearing , Drilling , Lathing , Grooving |
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Processes for Plastics |
Material Extrusion , Polymerization , Powder Bed Fusion , Material Jetting , Binder Jetting |
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Processes for Composites |
Braiding , Knitting , Weaving , Fiber placement , Draping , Chemical Vapor Deposition |
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Processes for Ceramics |
Milling, Batching, Mixing, Forming, Drying, Firing, Assembly |
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Biological polymers (biopolymers) of crystalline n-chains of saccharides. |
Cellulose |
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Lower molecular weight branch-chained polysaccharides. |
Hemicellulose |
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Complex and high-molecular weight phenylpropane chains. |
Lignin |
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Gets filled up by these biopolymers. |
Cell wall |
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These are other Properties of Wood |
a. Color b. Luster c. Odor d. Taste e. Texture |
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Have pores visible with the naked eye or a hand lens. |
Hardwoods |
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1. Growth rings 2. Heartwood and sapwood 3. Grain orientation Are the _________ |
Macroscopic properties of woods |
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Advantages of woods |
• Thermal Properties • Acoustic Properties • Electrical Properties • Mechanical Properties • Aesthetic Properties • Oxidation Properties • Working Properties • Variation • Environmental • CO2sequestration |
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Disadvantages of woods |
• Shrinkage and Swelling of Wood • Deterioration of Wood • Biotic Deterioration of Wood • Pest and Parasite Infestation • Hygroscopicity |
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