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Fire-polishing is a technique used in cleaning test tubes in labs and getting the lip of the test tube slightly annealed ( heat treated ) making a circular ( like cleaning drinking glasses) motion held ( in a secure holding device) in the flame of a Bunsen burner, best done with Pyrex or other heat-resistant tubes. I have seen it done. Mrs. Lamour used to practice this technique in Stevens Academy. it is a cleaning practice.

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Why must glass edges be fire polished?

Glass edges are fire polished to remove any sharp edges that may cause injury. The process involves heating the edges of the glass to high temperatures to melt and smooth out any rough or jagged areas, resulting in a safe and smooth finish.


Why must stirring rod be fire polished?

A stirring rod is fire polished to remove any sharp edges or rough surfaces that could potentially cause injury to the user or damage to the glassware being stirred. This process creates a smooth and sleek surface that is safe to handle and helps to prevent contamination during experiments.


Is polished brass the same color as polished crome?

No, polished brass is golden coloured. A deep golden if slightly tarnished, or almost white gold if well polished. While polished chrome is silver coloured, almost mirror-like.


Can a fire start through the refraction and conversion of light?

No, a fire cannot start through the refraction and conversion of light alone. Fire requires a heat source, fuel, and an oxidizing agent (such as oxygen) to ignite and sustain combustion. Light refraction and conversion do not generate enough heat to start a fire.


Are polished rocks real?

Yes, polished rocks are real. They are natural stones that have been smoothed and polished through processes like tumbling or hand polishing, enhancing their appearance and luster. Commonly used for decorative purposes, jewelry, or as collectibles, polished rocks showcase the beauty of the minerals and patterns found within them.

Related Questions

What are 3 objects that reflect?

Glasses that you wear on your face. Glasses that you drink out of and of course mirrors.


How do glasses reflect light?

Glasses reflect light because of their smooth and polished surfaces. When light hits the surface of the glasses, it bounces off in a predictable way, creating a reflection. This reflection allows us to see objects clearly through the glasses.


What does Piggy contribute to the fire?

his glasses


What is the symbolism of the glasses in Lord of the Flies?

the glasses symbolize hope because with the glasses the boys can start a signal fire,cook,and have heat


In lord of the flies how does jack solve his problem of how can you make fire?

Jack solves the problem of making fire by stealing Piggy's glasses, using them to start a fire and cooking meat. He disregards Piggy's suggestion of using the glasses for rescue signals, instead prioritizing his desire for power and control over the boys.


In Lord of the Flies Whose idea is it to use Piggy's glasses to start fire?

It is Jack's idea to use Piggy's glasses to start the fire. Jack steals the glasses right off of Piggy's face without even asking him first.


Why must glass edges be fire polished?

Glass edges are fire polished to remove any sharp edges that may cause injury. The process involves heating the edges of the glass to high temperatures to melt and smooth out any rough or jagged areas, resulting in a safe and smooth finish.


How do you make glasses on alchemy?

Sand and fire


How do they start the fire on the mountain in The Lord of the Flies?

They cut wood and then used Piggy's glasses to reflect the sun so the wood would catch fire.


What did jack and Ralph accidentally do with the fire and glasses?

Jack and Ralph accidentally let the fire go out while using the glasses to start it. Their neglect in keeping the fire going led to a missed opportunity for rescue when a ship passed by the island.


How did the boys make a fire in lord of the flies?

Each and every fire that was made was using Piggy's glasses.


How do they make the fire in lord of flies?

The only way fire is made on the island is by using Piggy's glasses.