Scientists introduced a device that creates holograms using ultrasound & polystyrene ball

Researchers at the University of Sussex in the UK have introduced technology that can create holograms using ultrasound and a 2mm polystyrene ball. They can move and interact with the observer.

Scientists called the new technology "multimodal acoustic trap display" (multimodal acoustic trap display, or MATD). Images are created between two horizontal plates on which many tiny ultrasound speakers are mounted. They create an inaudible sound field in which there is a "pocket" of low pressure, where a polystyrene ball enters. By moving the "pocket", you can move the ball, forming an image. Colors are added to the image using the projector.
Through careful monitoring of the ultrasound field, scientists can add sound effects and music to animated images. Vibrations can be adjusted to receive sound waves in the entire range of human hearing and, for example, to imitate clear speech. In addition, you can interact with images and even feel them in your own hands.


Harvard scientists checked how many chips should contain a healthy packet of chips.

For most of us, 6 chips are barely a snack, not to mention a dish - but that's exactly the number of chips you should eat if you do not want to shorten your life by half a year.

healthy packet of chips.

A healthy dose of chips should contain only six chips, according to a Harvard scientist who studied the subject. 

Fried potato sticks, or their common name and popular french fries, provide comfort and happiness to humans since the 18th century, when they were probably invented.

The Department of Nutrition at Harvard University in the United States calls them "starch bombs" and believes that 6 pieces of them are more than enough for those who want to avoid potential fatal heart problems.

In the past 25 years the average size of portions in restaurants and food chains has doubled and tripled.

For example, in the past, bagels were sold with an average diameter of 7.5 cm, while today the average diameter of bagels sold in the United States is just over 15 cm. 

A serving of fries contained 15 pieces in the past, while today most restaurants serve a serving that contains an average of 55 pieces.

This partly based on a study recently published in The American Journal of Clinical Nutrition and conducted by Italian researchers who found that people who completely abstain from eating fries enjoy a longer life expectancy than people who eat it. 

Those Eat fries at a frequency of 2-3 times a week were more likely to have diabetes, cardiovascular disease and also to suffer from obesity.

For most Americans, giving up fries is not a simple step. "The common attitude about it is" you'll have to get them out of the my frozen and dead hands.

So is it really worth abandoning French fries or making do with just six pieces of it for the right to live another six months? Not sure there is one correct answer for all people. 

Always consult a Doctor