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엑스트라

온대의 사계절 중의 하나이며 하루가 짧아지고 날씨가 가장 추운 계절입니다.

Let's take a trip to the hills. We can hike, ride a bike or choose the scenic train route.

Lake Balaton, located in Hungary, is the largest lake in Central Europe and a popular tourist destination.

This tree, popular in rural courtyards, is grown for its stone fruit and good quality timber.

Low-intensity warm-up exercises

During the reaction, the combustion of magnesium is intense enough to reduce carbon dioxide thus producing more oxygen.

When heated, powdered sulphur and zinc react with each other in a highly exothermic process.

It is a common plant in forests that needs to be avoided during excursions.

양파 껍질의 불염포에 있는 옥살산칼슘과 황산칼슘 결정체를 100배의 확대율로 관찰합니다.

Let’s see what a plant cell nucleus looks like under the microscope.

We will use the epidermis of an onion to examine the process of plasmolysis.

The surface of an eelgrass leaf observed under an optical microscope at medium magnification.

Perennial plants are herbaceous plants that live for more than two years.

Get to know animal body parts through fun pictures!

In the mid-19th century, the Van de Graaff generator was considered an interesting device. It can also be used to demonstrate how charges flow through a conductor.

A Van de Graaff generator is used to produce electric discharge.

The Canary Islands is an excellent example of hotspot volcanism.

What happens if you drop a hammer and a feather at the same time?

How can some objects remain floating in the air? The answer lies in magnets.

수산화칼슘용액 속에 공기를 불어넣어서 공중의 이산화탄소 함유를 통해서 탄산칼슘을 생산하는 식험입니다.

Let’s see what happens when we place an aluminium ring on an electromagnetic coil and pass an electric current through the coil.

Is it possible to model a ball lightning in a laboratory? The answer lies in the plasma ball.

Can a convex lens create an image on a canvas? This is the question to be answered in this video.

A common wetland perennial, the common comfrey can be found in swampy hollows in meadows.