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When heated, powdered sulphur and zinc react with each other in a highly exothermic process.
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.
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.
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.
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.
Carnivorous plants supplement their diets by trapping and digesting animals.
This protected plant species can often be found in montane meadows and beech forests.
A tall, deciduous tree with black markings on its white bark, the silver birch is native to the colder regions of the northern hemisphere.
Its spherical flowers produced in corymbs are quite showy; it is a popular decorative plant, thriving in humid conditions.
Honey locust is a thorny tree species that can even adapt to nutrient-poor soils. Legend has it that Christ's crown of thorns was made from this tree.
This species is an evergreen conifer with many uses. Native American Indians called it 'tree of life'. Today it is a popular ornamental plant.