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2. Precision glass moulding - Wikipedia

   en.wikipedia.org/wiki/Precision_glass_moulding

   The glass exhibits a change in refractive index, called index drop, during the annealing process. This drop is caused by fast cooling of the mould insert, inducing a small amount of residual stress in the glass. As a result, the glass exhibits a small index change when compared to its fine anneal state.

3. Glass batch calculation - Wikipedia

   en.wikipedia.org/wiki/Glass_batch_calculation

   For example, the batch component SiO 2 adds 1 mol SiO 2 to the glass, therefore, the intersection of the first column and row shows "1". Trona adds 1.5 mol Na 2 O to the glass; albite adds 6 mol SiO 2, 1 mol Na 2 O, and 1 mol Al 2 O 3, and so on. For the example given above, the complete batching matrix is listed below. The molarity matrix N G ...

4. Blow molding - Wikipedia

   en.wikipedia.org/wiki/Blow_molding

   Because glass is very breakable, after the introduction of plastic, plastic was used to replace glass in some cases. The first mass production of plastic bottles was done in America in 1939. Germany started using this technology a little bit later but is currently one of the leading manufacturers of blow molding machines.

5. Cost overrun - Wikipedia

   en.wikipedia.org/wiki/Cost_overrun

   The cost overruns constituted 33% of the total expense. The budget for the bridge increased to 150%. The cost overruns exceeded the original budget by 50%. The final example is the most commonly used as it specifically describes the cost overruns exclusively whereas the other two describe the overrun as an aspect of the total expense.

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8. Home improvement - Wikipedia

   en.wikipedia.org/wiki/Home_improvement

   The concept of home improvement, home renovation or remodeling is the process of renovating, making improvements or making additions to one's home. [1] Home improvement can consist of projects that upgrade an existing home interior (such as electrical and plumbing), exterior (masonry, concrete, siding, roofing) or other improvements to the property (i.e. garden work or garage maintenance ...

9. Wall St slips as upbeat data sparks uncertainty on Fed's ...

   www.aol.com/futures-subdued-ahead-economic-data...

   Declining issues outnumbered advancers by a 1.44-to-1 ratio on the NYSE and by a 1.62-to-1 ratio on the Nasdaq. The S&P 500 posted seven new 52-week highs and four new lows, while the Nasdaq ...