Anode

X-Rays. The man credited for the discovery of the X-Rays was physicist Wilhelm Röntgen. The “Röntgen experiment” consisted of studying a Crookes tube, a high-powered light bulb. A high DC voltage of about 100kV was applied across its cathode and anode, causing the tube to glow with a bluish-green light. This emitted light was referred to as the cathode rays. As the voltage in the tube varied, the color of the emitted light also varied. Röntgen

In class I was introduced to the concepts of batteries and electrochemical cells. I am really interested in batteries and how they work and what goes into making a battery. I was inspired to this experiment mostly because I want to study electrical engineering in university and I wanted to find out the chemistry behind the production of the electrical energy in batteries. During my reading, I found out that the first battery was actually invented by Italian physicist Count Alessandro Volta and was

In order to properly talk about radar, or Radio Detection and Ranging as it was once called, we must first look at the history of radio waves and how eating carrots saved Britain. During the late years of the 19th century, many advances were being made in the field of electromagnetism. James Maxwell, among his many discoveries, stated that electromagnetic waves produced through oscillating charges could propagate through space at the speed of light. Heinrich Hertz managed to prove this hypothesis

The process of extraction of copper varies depending of what ore, copper is being extracted from. Chalcopyrite (CuFeS2) is a sulphide ore and it is one the most common ores of copper. The process of extracting copper from chalcopyrite is a quite complex procedure in which both physical and chemical processes are involved. As chalcopyrite is around 0.5% copper and 99.5% “unwanted rocky material”, the first step to extract copper from chalcopyrite is to increase the concentration of copper in the

1.0 Introduction Safe operation of the GE Essential with SenoClaire Tomosynthesis mammographic unit is essential for the wellbeing of practitioners and patients. The safe operation of this equipment helps to ensure the production of mammograms of good diagnostic quality, which allows practitioners to deliver the best possible patient care. The features of this mammography unit allow for measures in radiation protection and safeguarding electromechanical safety, while also allowing the practitioner

䀀䀀tricity is one of the most widely used forms of energy. Electricity is referred to as an energy carrier, which means the electricity comes from the conversion of other sources of energy. Energy sources used to make electricity are either renewable or non-renewable, but electricity itself is neither renewable nor nonrenewable. Electricity is measured in watts and kilowatts. One watt is a very small amount of power, for example, it would require nearly 750 watts to equal one horsepower. One way

The filament adjacent to the cathode is heated up and the energy is absorbed by the electrons and gets ejected of the cathode. The electrons travel towards the anode and hits the tungsten target and rapid deceleration of electrons occurs and this deceleration results in production of electromagnetic radiation that is x-rays. The anode keeps on rotating so that the heat will be lost to a larger area. SENSORS /DETECTORS The x-rays leaving the object must be studied to create images. Basically there

A battery has three main parts: it has two terminals made of chemicals, which are called the anode and the cathode. There’s also the electrolyte, which detaches the two terminals. The electrolyte is a chemical medium. It allows the flow of electrical charge between the cathode and anode and when a device is connected to a battery the chemical on the anode releases electrons to the negative terminal. This is called an oxidation reaction. While this is happening, at the positive

Nanocomposites A nanocomposite is multiphase material consist one of the phases has one, two or three dimensions of less than 100 nm. Polymer nanocomposities have existed for decades. Term “nanocomposites” first appeared in 1994[Lan & Pinnavaia (1994), Lan et al. (1995), Giannelis(1996)]. After this a lot of researches started on the field of various fillers. Due to increased demands for the improvement in the performance of polymer materials led to emergence of new technologies. In these days,

How fuel cells work A fuel cell is a device that produces an electrical current through a chemical reaction. All fuel cells contain a cathode and an anode, which are positive and negative electrodes, respectively. The chemical reactions which produce electricity occur at the electrodes. Fuel cells also contain an electrolyte, which carries electrically charged particles between the electrodes. A catalyst also aids to speed up the chemical reaction at the electrodes. In fuel cells, an impurity must