Vegetable processing

Vegetable processing is an industrial sector that deals with the preparation of agricultural products. Cultivation and processing often happens at separate...


A mummy is a dead body that has not decomposed as a result of embalming or special environmental factors.

The snow leopard

A fearsome predator of snowy mountains. Of all the felids the snow leopard jumps the furthest.

The myth of the labyrinth

Theseus’s battle with the Minotaur, a creature with the head of a bull and the body of a man, in the mysterious labyrinth.

The reflection of a point across an axis

Axis t and point P are given. Let’s plot the mirror image (point P’) of point P across axis t.

Making a tissue sample

Examination of the cells and stomas on the epidermis of a pelargonium at 100x magnification.

Plotting a 60° angle

To plot a 60° angle, we refer you back to the plotting of an equilateral triangle.

Resonating air column

The amplified sound of the tuning fork indicates that the tuning fork causes the air column in the tube to resonate, producing a standing sound wave.


The appearance of snowdrops signals the arrival of spring. It is a protected species in many countries.

On the track of the rain - Savannahs

The flora and fauna of the savannahs adapt to the climate.

El Niño

The El Niño phenomenon has a great effect on the Earth's climate.

Medieval tombs

The discovery of medieval tombs can reveal numerous secrets. Let’s take a look at one.

The cymbal

When plates and membranes vibrate they deform spectacularly. These deformations, however, are hardly perceptible by the human eye, but are visible in...

The founding of Rome

Why did the statue of a she-wolf and two little boys become an iconic symbol of Rome? This video is about their story.

Baking powder rocket

We produce carbon dioxide with sodium hydrogen carbonate and citric acid. It is a skyrocketing success!

Reflecting a triangle across an axis

Axis t and triangle ABC are given on a particular plane. Let’s plot the mirror image of triangle ABC.

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