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    How hazardous is semiconductor etching?

    Thanks Mapes, for the insightful answer. I'm very excited about semiconductor processing, but have my reservation because of the many hazards involved. Your answer puts me a bit more at ease with the acid hazards.
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    How hazardous is semiconductor etching?

    Many of you may be annoyed by my question. I'm sorry in advance. I've just finished my M.S. in Materials Science & Engineering, and have gotten an offer as a Semiconductor Process Engineer. The specialty is lithography and wet chemistry - including wet etching. As an MSE student I learned...
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    Calculate amount of ferrite in a sample.

    You can estimate the concentration of ferrite in your sample by doing an areal analysis of your sample. You can do this by capturing a magnified image of your sample surface (taken from a microscope), and then using any of the many areal analysis software tools out there. An example of such...
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    Lever rule, help needed asap

    Consider the homogeneous liquid at the eutectic composition (50% To an 50% Lb). When you cool it to room temperature, you get two distinct phases, alpha and beta. By the lever rule, the relative concentration f alpha and beta phases is calculated as follows: 1. beta phase...
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    Glasses which enable you to see in black & white

    Yes - any glass made before 1951 in the televsion market. By going even farther in time you can also make it mute.
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    What really is Chemical engineering? and what can you DO with it?

    The theoretical frame of a chemist is not so different from that of a chemical engineer. The primary difference is in the type of application each focuses on: chemical engineers work with practical applications, and all their work has the ultimate goal of developing a working device; on the...
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