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The way Erwin Perzy’s family tells it, if Thomas Edison had designed a better light bulb, Perzy would never have invented the snow globe. Back in 1900, Erwin Perzy I was working in Vienna as a fine instruments mechanic when a surgeon came to him with a problem. Although theRead More →

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Colophony or Rosin Based Solder Flux Fume is a known cause of occupational asthma and as such exposure to it should be controlled. An effective method of engineering exposure control is to use local exhaust ventilation (LEV) to extract the fume at source. Personal exposure to solder fume was quantitativelyRead More →

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Fidji Simo is a prime example of someone who has catapulted up her particular career ladder. Today, she’s VP of Product for all of Facebook’s video, news and advertising efforts — managing an organization of 400 PMs. When she joined the company six years ago, she was a product marketingRead More →

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Tree trimming tricks and we also make a recommandation on how to search the best tree services companies, to avoid home disasters and huge costs. When planting a tree, you need to make sure that its root system is able to settle and expand appropriately. Too much new soil aroundRead More →

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Weld nuts and weld studs are commonly used to provide a means for subsequent fastening of additional components and assemblies, or for periodic removal of service parts for maintenance and repair. When specifying welded fasteners, care should be taken not to tightly tolerance concentricity or perpendicularity to a datum plane,Read More →