Web24 aug. 2024 · eirica Answer: pencil is dull Explanation: because its made of wood and if u feel it its dull but* and,why you ask?bit you know what is the answer but ill give you points The graphite is mixed with clay and formed into long thin pencil lead. The “lead” in a pencil isn't actually made from lead. It is made from a form of carbon called graphite. WebThe first thing to notice about a mineral is its surface appearance, specifically luster and color. Luster describes how the mineral looks. Metallic luster looks like a shiny metal such as chrome, steel, silver, or gold. Submetallic luster has a duller appearance. Pewter, for example, shows submetallic luster.
10 Lead Element Facts (Pb or Atomic Number 82) - ThoughtCo
WebBy Leon Key 04.06.2024 QA. Dull (non-shiny) solder joints are usually the effect of coarse grain structure in the solid solder joint (though there can be other causes). The more slowly a joint cools, the coarser the grain growth and, conversely, the faster the joint cools, the finer the grain growth and the shinier the joint. Web20 nov. 2024 · Give your tree a shower every once in a while and make sure to mist your new leaf buds so they can grow out healthy, green, and shiny! Clean your leaves. Again, this seems obvious, but dust and hard water stains are one of the key factors in dull leaves. time travel train back to the future
soldering - What makes a solder joint dull? - Electrical
Web22 dec. 2024 · When a solder joint is reheated without applying flux, the solder might get dull. Or, when I solder a joint (maybe with the temperature set higher than enough), the … Web19 jan. 2024 · If you have a healthy scalp, then it will naturally be more oily and this will lead to a shinier appearance. However, if you have a dry scalp, then it will be less oily and this will lead to a duller-looking head. The smoothness of your scalp This is another big factor that contributes to how shiny your head will be. Web18 mrt. 2012 · after reflow soldering ,the solderjoints were not shiny as they were supposed to be. I have tried many reflow profiles, the peak temperature (TP) of the solder joints from 222℃to 210℃,time of temperature higher than 179℃ are range form 60s~100s,some time ,the time of temperature higher than 215℃ reach 20s,higher than 220℃ time reached ... time travel turnips acnh