Surprise box Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
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Surprise box. Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

Put a heavy nut in a matchbox. Move it as close to one edge as possible. Now this edge will stay on the table, even if almost the entire box is hanging in the air.

This experience is nowhere near as beautiful as the ladle and plate experiments. But it has one great feature. Here, all the weight lies above the fulcrum, and the boxes do not fall!

Surprise box

Why? Now you can probably guess. The fact is that if the boxes begin to roll over the edge of the table, the nut will rise. In other words, if the balance is disturbed, the center of gravity will rise. So the balance will be restored.

Interestingly, for the same reason, tables, cabinets, beds, monuments, buses, cranes, garden benches, diesel locomotives, galoshes under a coat rack, and thousands of other items of a wide variety that would not fit in this list are in stable balance. book!

They have one thing in common: when the balance is disturbed, the center of gravity rises. That is why they all lie, stand, ride without tipping over!

Author: Galpershtein L.Ya.

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New pill replaces daily medication 20.11.2016

A group of scientists from MIT and Brigham Hospital has developed a unique technology that, instead of taking medications every day at a fixed time, it will be enough to swallow just one pill that will do all the work for you.

People with chronic conditions such as asthma or heart disease often need to take medication on a daily basis. But this simple, in essence, procedure is a big problem for many. In fact, less than 50% of people actually take their medication regularly and on time. But researchers at MIT and Brigham Hospital (BWH) in Boston came up with an ingenious solution: they created a single pill that, once swallowed, provides the body with the required doses of the drug for an extended period of time.

The new device, which has so far only been tested in pigs, could not only be a potential solution to the problem of patients with chronic diseases, but also a very effective way to treat diseases that are widespread in Third World countries and require long-term therapy, such as malaria.

To be effective, new pills have to overcome a number of serious obstacles. As you know, the stomach is equipped with strong muscles that push all the contents into the small intestine, so it is not easy for a pill to stay in place. To address this issue, the team of scientists endowed the drug with a special design, so that when ingested, the capsule opens into a kind of star that simply cannot crawl into the intestines. A special polymer coating ensures that pre-calibrated doses of the drug are consistently released and enter the body at a certain interval. As soon as the capsule becomes empty, it finally disintegrates and is excreted from the body naturally.

According to Giovanni Traverso, lead author of the study and a gastrointerologist specializing in biomedical engineering, this type of therapy can be beneficial in cases of high blood pressure and diabetes, the symptoms of which do not appear with a regular frequency, and therefore a person can simply forget about taking medications in the daily hustle and bustle. . Currently, there are already drugs on the market that have a prolonged action, but even these are excreted from the stomach by the end of the day. For truly long-term treatment, doctors and patients must continue to turn to patches, implants, and intravenous medications.

The project was funded in part by the Bill Gates Foundation, as part of a global campaign to rid the Third World population of malaria. Initially, the researchers focused on using an antiparasitic drug called ivermectin, which, if taken long-term, significantly reduces the risk of the disease. During tests on pigs, scientists were able to isolate the drug in small doses for as long as 10 days. The technology, of course, is still far from being usable in the commercial market, but still ahead. The next step will be a series of final tests in pigs, after which the team of scientists will be able to come to grips with human trials of the therapy.

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