Recent Posts

by Osama M. Khaled last modified 2022-05-30T07:25:12+01:00

Microscopes

by Osama M. Khaled — last modified May 18, 2022 11:52 AM
A microscope is a laboratory instrument scientists use to examine objects that cannot be seen by naked eyes.

Java History

by Osama M. Khaled — last modified May 04, 2022 07:59 AM
You may think that history makes facts. You will be amazed to know Java history. Take the quiz to know more

Speed

by Osama M. Khaled — last modified May 02, 2022 06:15 AM
Speed is a very important concept in physics to explain one of the most important characteristics of moving objects.

Catalysts

by Osama M. Khaled — last modified Apr 22, 2022 12:08 AM
Catalysts are very important in industry. They speed up a chemical reaction by lowering the amount of energy you need to get one going. They are the backbone of many industrial processes, which use chemical reactions to turn raw materials into useful products.

Java Compilation Errors

by Osama M. Khaled — last modified May 04, 2022 05:55 AM
This quiz will help you recognize common compilation errors. Usually, IDEs are powerful enough to capture such errors on the fly. However, it is very important to know them by heart as you may be in a situation using only Javac and you do not want to waste a lot of time