Why are thermometers glass and not plastic, because they often break and mercury flows out?

Why are thermometers glass and not plastic, because they often break and mercury flows out?

PSM 830 a Treatment Disposal technology hospital biomedical care waste incineration

Previous questionSleep paralysis is painful. I feel the work of blood vessels (a rumble in my head), the nervous system (convulsions like the current beats, strongly), this from childhood but intensifies. 25 years?
Next questionWhy is it harmful to sit cross-legged?

answers (4)

Answer 1
June, 2021

Now they began to sell thermometers, in which the outer shell is made of an elastic polymer material. Accordingly, if the thermometer is dropped, this shell absorbs shock well and keeps the inner rod with mercury intact.

Answer 2
June, 2021

More on this:

If mercury is so dangerous, why are fragile glass mercury thermometers still produced and sold?

Answer 3
June, 2021

Probably we can say that it happened so simply historically. Now the chemistry of macromolecular compounds is quite developed and, for sure, if you turn to IUDs, they synthesize (or have already synthesized) a sufficiently strong, transparent and warm-water polymer for such purposes (the only question is how much this polymer will cost). And when such thermometers were just beginning to be produced, polymers were studied to a much lesser extent. In industrial production, ordinary polyethylene appeared only in the late 30s of the XX century. And now, for many years now, there has been equipment and an established scheme of fairly cheap production. Indeed, in global production, often the decisive factor is money, and the problem is not so urgent that crowds of scientists and engineers would rush at it to invent a cheap and simple scheme for the industrial synthesis of a polymer suitable for a thermometer

Answer 4
June, 2021

Faster heating, and clear temperature display. There is a suspicion that when using plastics, there will be thermal distortions when heated, since the plastic shell will accumulate additional. temperature, due to different thermal conductivity.

Related question

If mercury is so dangerous, then why are fragile glass mercury thermometers still produced and sold?

Read more

Do mercury thermometers have a shelf life, or are they eternal?

Read more

Where to take a whole mercury thermometer? I want to buy an electronic one and hand over a mercury one out of harm's way.

I heard what they take in pharmacies, but I'm not sure about it.

Read more

Barometer...A quick look at how I removed airlocks from the mercury column

Why do some people experience extremely unpleasant sensations from sounds like "foam plastic creak", "fingernail on glass", etc., while others do not care?

Read more

Children are often not allowed to chew gum because they might swallow it. Is there a lot of harm to the child / adult body from the swallowed gum?

Read more

What are computer glasses and do they really help?

Read more

How and with what do they break bones in a trauma center if they have not healed correctly?

Read more

Why is HIV not transmitted through insect bites, because they come into contact with blood?

Read more

What is Mercury Poisoning? | National Geographic

How to take out your negative, accumulated emotions, anger, and negativity, and not accumulate in yourself, and not break down on loved ones?

Read more

Is it true that vaccinations are not needed, because the diseases against which they are vaccinated no longer exist?

Read more

Why don't vegans die because of their diet, even though they are terrified of "essential amino acids" and the like?

Read more

Why do I often talk to myself? This is not schizophrenia, but rather thoughts out loud. Good or bad?

Read more

Why are some medicines for rare (and sometimes not rare) diseases often so expensive?

Read more

Mercury Spill Cleanup - Responding to a Mercury Spill

I am an atheist and I cannot understand why there are so many believers among doctors, because they have studied biology, the human body, are familiar with evolution?

Read more

How should you rub your glasses so that they do not get splattered so quickly and do not fog up too much?

Read more

Why are some people able to have out-of-body experiences and others not?

Read more

Why does a person have only one heart, and not two, because two are much more practical?

Read more

Why am I not getting smarter and more experienced? I'm 20. Although I'm constantly trying new things, I read books and learn. They always tell me to take off my rose-colored glasses and grow wiser for many years.

Read more

Mercury Spill Cleanup

What contraceptive methods were used in Game of Thrones? After all, they mated so often and did not give birth so often (except for the Frey family)

Read more

What dangerous diseases can I get sick and at the same time not know, because they proceed unnoticed at first?

Read more