Does a magnifying glass magnify? Fun physical experience at home

ENTERTAINING EXPERIENCES AT HOME
Directory / Entertaining experiences / Experiments in physics

Does a magnifying glass magnify? Physical experiments

Entertaining experiments in physics

Entertaining experiences at home / Physics experiments for children

What a question? A tiny insect, a small screw, a small watch wheel seem much larger when viewed through a magnifying glass or at least through a magnifying glass from grandmother's glasses. You can see details that you can't see with the naked eye.

But it turns out that the effect of a magnifying glass strongly depends on the distance. Look through a magnifying glass at some object, gradually moving away from it. At first, the image increases, then it starts to swell like a soap bubble, fills the entire magnifying glass with itself, and, finally, blurs and disappears.

Keep moving away. The image will reappear, but you will need to keep your eye away from the loupe to see it. The image will be enlarged but inverted. Move even further away - and this inverted image will become smaller and smaller ... Soon it will become equal to the object, and then completely reduced. So a magnifying glass can only magnify up close. The magnifying glass does not enlarge distant objects, does not bring them closer, but seems to remove them!

What if we want to consider a distant object in an enlarged form? An artist on stage, a ship at sea, "channels" on Mars? A magnifying glass will give a reduced image of such items. But on the other hand, the object is far away, and its image will turn out here, close. So this image can be viewed through a second magnifying glass!

And now the image can be enlarged. If the second glass is stronger than the first, the object will come closer to us! So it was possible to create spotting scopes, and telescopes, and binoculars. So the magnifying glass allowed us to see not only microbes, but also cracks in the Moon, and the rings of Saturn, and unimaginably distant stars and nebulae!

Author: Galpershtein L.Ya.

We recommend interesting experiments in physics:

▪ Experiences with stored energy

▪ The air kicks

▪ water wheels

We recommend interesting experiments in chemistry:

▪ Mineral Fertilizers

▪ Color reaction of copper sulphate with ammonia solution

▪ Battery from aluminum circles

See other articles Section Entertaining experiences at home.

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

Sensor for biometric breath authentication 28.06.2022

Today, a person can be identified by a fingerprint, iris or face, but progress does not stand still, and Japanese scientists offer a new method of authentication. They developed a biometrics system based on a sensor that recognizes people by the composition of the exhaled air. Combined with machine learning technology, this "artificial nose" is nearly 98% accurate.

In the age of digital information, biometrics is an important way to protect valuable data. In addition to the already familiar fingerprints and palms, voices and faces, there are less common options: through the veins on the fingers or electrical brain waves.

"All these methods are based on the physical uniqueness of each individual, but they are not completely reliable. Physical characteristics can be copied or even broken by trauma," explained Chayanut Jirayupat of Kyushu University, one of the researchers. "Recently, a new class of biometric authentication has emerged that uses a unique chemical composition for personal identification".

A team of scientists decided to explore the biometric potential of human breath. In the end, the composition of exhaled substances has already learned to diagnose cancer, diabetes, and even COVID-19. The analysis showed that 28 breath components can be used for authentication, writes EurekAlert.

Based on these data, a 16-channel sensor was created, each of the channels of which identifies its own set of connections. The data is then fed into a machine learning system that analyzes the makeup and develops a profile that is then used to identify the individual.

After testing the system on breath samples from six people, the researchers found an average identification accuracy of 97,8%. This level did not change even when the number of samples grew to 20, and the group consisted of people of different nationalities, sex and age.

Biometric authentication is increasingly replacing traditional passwords. Engineers from the United States have improved the method of establishing the identity of the pattern of finger vessels by adding one more dimension to the two. The new biometrics system is wrong only 1% of the time.

Other interesting news:

▪ The Pilot headphones translate in real time

▪ GPS Bullet

▪ Water repellent glass

▪ 128-layer 3D NAND Flash

▪ Space rocket powered by coal

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ site section Digital technology. Article selection

▪ article Theory of evolution of the organic world. History and essence of scientific discovery

▪ article Where is the oldest observatory located? Detailed answer

▪ article Rocket. Legends, cultivation, methods of application

▪ article Automatic watering the garden. Encyclopedia of radio electronics and electrical engineering

▪ article Standards for testing electrical equipment and devices for electrical installations of consumers. Breakdown voltages of arresters and arrester elements at a frequency of 50 Hz. 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