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.


Migraines, Food and the Connection Between Them

The Connection Between Migraines and food

Many studies link diet and migraines, and the findings point to certain foods that are more likely to affect people with migraine. 

We've compiled a list of common triggers.

Migraine is not just a headache, and a person who has experienced migraine will do anything to avoid the intense pain, the feeling of knocking on the side of the head, the accompanying nausea and sensitivity to light and noise.

Recent studies link diet and migraines, and the findings point to certain foods that are more likely to affect people with migraine. 

Today, the recommendation is to have an eating diary, document what you ate, and how you felt afterwards to try to identify patterns.

Migraines and food

List of foods known as "trigger" foods that might trigger migraines in susceptible people.


  • Processed meats are the most common triggers. It is recommended to avoid sausages and sausages, canned or smoked meat.

Dairy products 

  • Processed dairy products contain thiamine. Dairy products such as sour cream and ravine are familiar triggers, as well as processed cheeses such as cheddar, mozzarella, yellow cheese, blue cheese, feta, parmesan and more.


  • Papaya, kiwi, pineapple, citrus fruits, plums and figs. In addition, bananas and avocados are also very ripe.


  • Onions, Chinese peas, and fresh garlic


  • It is recommended to avoid all chocolate drinks, caffeinated drinks and alcoholic beverages (which increase blood flow to the brain), especially beer, champagne and red wine.

Processed food 

  • Foods that contain preservatives, salts and so forth lead to the expansion of the blood vessels and cause headaches. Especially recommended is MSG, which is found in Asian sauces and other foods.

Cold food

  • Many of those suffering from migraines report cold food sensitivity.

Other foods

  • Peanuts, peanut butter, various grains, pizza, potato chips, chicken liver and internal organs, smoked fish, dried fruits, artificial sweeteners such as aspartame.