The greater the potential difference or voltage, the greater the current flow.
In other words, when the potential difference between two points in a circuit increases, the current flowing through it increases. When the potential difference (v) between the points decrease, the current (I) decreases. In fact, the potential difference across a conductor is directly proportional to the current flowing through it when the tempterature of the conductor is kept constant.
V = I/R
Ohm’s law states that the current that passes through an ohmic conductoris directly proportional to the potential difference across it if the temperature and other physical condictions are constant.
An ohmic conductor is one which obeys Ohm’s law, while a conductor which does not obey Ohm’s law is known as non-ohmic conductor.

In Arabic, the word  halal means permitted or lawful. foods are foods that are allowed under Islamic dietary guidelines. According to these guidelines gathered from the Qu'ran, Muslim followers cannot consume the following:

  • pork or pork related products
  • animals that were dead prior to slaughtering
  • animals not slaughtered properly or not slaughtered in the name of Allah
  • blood and blood by products
  • alcohol
  • carnivorous animals
  • birds of prey
  • land animals without external ears

What is the Ka'aba?:

The Ka'aba  is an ancient stone structure that was built and re-built by prophets as a house of monotheistic worship. It is located inside the Grand Mosque in Mecca, Saudi Arabia. The Ka'aba is considered the center of the Muslim world, and is a unifying focal point for Islamic worship.


The Ka'aba is a semi-cubic building that stands about 15 meters high and 10-12 meters wide. It is an ancient, simple structure made of granite. In the SE corner, a black meteorite (the "Black Stone") is embedded in a silver frame. Stairs on the north side lead to a door which allows entry to the interior, which is hollow and empty. The Ka'aba is covered with a kiswah, a black silk cloth which is embroidered in gold with verses from the Qur'an. The kiswah is re-done and replaced once a year.


According to the Quran, the Ka'aba was built by the prophet Abraham and his son Ishmael as a house of monotheistic worhip. However, by the time of Muhammad, the Ka'aba had been taken over by pagan Arabs to house their numerous tribal gods. In 630 A.D., Muhammad and his followers took over leadership of Mecca after years of persecution. Muhammad destroyed the idols inside the Ka'aba and re-dedicated it as a house of monotheistic worship.

Organic light-emitting diode


An organic light emitting diode (OLED) is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compounds which emit light in response to an electric current. This layer of organic semiconductor material is situated between two electrodes. Generally, at least one of these electrodes is transparent.

OLEDs are used in television screens, computer monitors, small, portable system screens such as mobile phones and PDAs, watches, advertising, information and indication. OLEDs are also used in light sources for general space illumination and in large-area light-emitting elements. Due to their comparatively early stage of development, they typically emit less light per unit area than inorganic solid-state based LED point-light sources.