Which planet is closest to the Sun? Detailed answer

Free technical library

BIG ENCYCLOPEDIA FOR CHILDREN AND ADULTS
Free library / Directory / Big encyclopedia for children and adults

Which planet is closest to the Sun? Detailed answer

Big encyclopedia for children and adults

Directory / Big encyclopedia. Questions for quiz and self-education

Comments on the article

Did you know?

Which planet is closest to the Sun?

Mercury. It is 2,5 times closer to the Sun than Earth.

Author: Mendeleev V.A.

Random interesting fact from the Great Encyclopedia:

How was dynamite obtained?

There are many important events that have become milestones in the history of mankind, but of course one of the most significant was the creation of explosives. It is traditionally believed that gunpowder was invented by the Chinese before the new era. Europeans began to use it only in the XIV century. But it was after this that they were able to extend their influence to the rest of the world.

Old-style gunpowder is a mixture of potassium salt (nitrate), charcoal and sulfur. It was the most common explosive until almost the end of the XNUMXth century.

In 1845, the German chemist Schönbein treated cotton fiber with a mixture of concentrated nitric and sulfuric acids. The result was a white, fibrous, cotton-like product now known as nitrocellulose, or pyroxylin. It was more of an explosive than gunpowder.

Around the same time, the Italian Ascanio Sobrero experimented with glycerin. He carefully, drop by drop, added it to a mixture of concentrated nitric and sulfuric acids. The result was a small amount of nitroglycerin, which proved to be an even stronger explosive than pyroxylin.

Almost 20 years later, the Swedish chemist Alfred Nobel accidentally managed to get dynamite. He worked with nitroglycerin, which created many problems because it often exploded during production and transportation. Although Nobel found a fairly safe way to obtain nitroglycerin, working with him still remained fraught with surprises.

Once Nobel took out several cans of nitroglycerin from a box of diatomite (a loose rock of volcanic origin) in which they were located, and found that the can had leaked. A mixture of spilled nitroglycerin and diatomaceous earth formed a solid mass. This made the explosive much less sensitive to shaking.

So the case helped to discover dynamite!

Test your knowledge! Did you know...

▪ How many constellations are there in the sky?

▪ What do wasps build their nests out of?

▪ Why were Neanderthals portrayed incorrectly in textbooks for a long time?

See other articles Section Big encyclopedia. Questions for quiz and self-education.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Artificial leather for touch emulation 15.04.2024

In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>

Petgugu Global cat litter 15.04.2024

Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>

The attractiveness of caring men 14.04.2024

The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>

Random news from the Archive

Molecule-sized solar cell 15.10.2012

A team of scientists led by Joachim Reichert, Johannes Barth and Alexander Holleitner of the Technical University of Munich and Itai Carmeli of Tel Aviv University have developed a method to measure the photocurrent generated by just one molecule. The scientists were able to show that such single-molecule systems could be put together to generate a current. Of course, not on the scale of household electric current from a socket for, say, a refrigerator. Proteins are light-controlled, high-efficiency, single-molecule electronic pumps that can act as current generators in nanoscale electrical circuits. The results are published in Nature Nanotechnology this week.

Scientists have studied the reaction center, which is a complex of chlorophyll - a protein found in the membranes of chloroplasts from cyanobacteria. Plants, algae and bacteria use photosynthesis to convert solar energy into chemical energy. The initial stage of this process is where the protein absorbs light and the chemical energy is converted into electrical energy. So far, none of the available methods has been sensitive enough to measure the magnitude of the photocurrent of an individual protein.

The first and main problem of physicists was to develop a method for the electrical connection of single molecules in a strong light field. Photosynthetic proteins, optically excited by a stream of photons, are directed through a tetrahedral gold tip, which at the same time is an electrical contact. With this technique, physicists were able to observe the photocurrent generated by a single protein particle.

In the future, photosynthetic proteins promise to become promising blocks for use in molecular optoelectronics.

Other interesting news:

▪ TEKTRONIX TDS7704 digital oscilloscope

▪ Eating eggs and meat improves mental performance in men

▪ Huge unknown lake found under Antarctica

▪ Gut bacteria can affect mood

▪ Unmanned passenger Boeing

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ website section Television. Article selection

▪ article Arbor under a tent. Tips for the home master

▪ article What is strange about the red-nosed deer Rudolph? Detailed answer

▪ article Head of advertising production department. Job description

▪ article Car security systems on the PIC12F629 microcontroller. Encyclopedia of radio electronics and electrical engineering

▪ article Voice S-meter. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews