سلتك فارغة
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.
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.
Producing calcium carbonate using the carbon dioxide content of the air blown into a calcium hydroxide solution.
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.
Perhaps no flower is more popular as a gift. In Bulgaria, roses are grown on an industrial scale as a perfume ingredient.
Examine starch inclusions covered by Lugol’s solution with an optical microscope.
Thalloid plants do not have real organs. Let’s take a closer look at their structure.
Turning safety matches into matches that can be ignited by striking them against any surface.