Essays Tagged: "electrodes"

Manual Metal Arc Welding (MMA) & Gas Metal Arc Welding (GMAW)

ed a bare metal rod with no flux coating to give a protective gas shield. The development of coated electrodes did not occur until the early 1900s when the Kjellberg process was invented in Sweden and ... berg process was invented in Sweden and the Quasi-arc method was invented in the UK. But the coated electrodes used these days were slow to be adopted because of their high cost. But because the need ...

(9 pages) 68 0 4.0 Mar/2002

Subjects: Science Essays > Engineering > Mechanical Engineering

The Telephone System

the electret transmitter. The carbon transmitter uses carbon granules between metal plates called, electrodes, with one consisting of a thin diaphragm that moves by pressure from sound waves and tran ... diaphragm that moves by pressure from sound waves and transmits them to the carbon granules. These electrodes conduct electricity flowing through the carbon. The sound waves hit the diaphragm causing ...

(4 pages) 88 0 4.8 Feb/1996

Subjects: Science Essays > Technology

An experiment to find out if the emotional fluctuation was reflected in biological responses.

motional fluctuation of the subject. These informations were pick up by a computer through applying electrodes to the experimental subject. It was found that the actual statistical outcome did match w ... sensors were used to measure the electrical resistance of the skin and the tissue path between two electrodes applied to the skin. An 80486 DX computer was connected to the pulse and galvanic skin co ...

(11 pages) 113 0 4.1 Dec/2002

Subjects: Social Science Essays > Psychology

Biological Psychology.

s important to understand the levels of brain activity that are present during sleep. Berger placed electrodes onto the scalp pick up the brain activity. Tiny voltages are detected as the neurone fire ...

(7 pages) 201 0 5.0 May/2003

Subjects: Social Science Essays > Psychology

Semiconductors.

a negative temperature coefficient of resistance. The diode is any electronic device with only two electrodes. They are now semiconductor devices. A conductor is a substance, or a body, that offers a ...

(6 pages) 57 0 4.6 Nov/2003

Subjects: Science Essays > Physics

Its a story about monkeys, that i made up when i found a monkey at the park one day.

experiments, and some cricket behavior/population studies. The rat experiments involved implanting electrodes in the rats' brains, and the rats experienced some pain. The Humane Society learned of th ...

(2 pages) 30 0 3.0 Jan/2004

Subjects: Literature Research Papers > Creative Writing

Ideas to Implementation.

manipulation of a stream of charged particles*CRT - consist of evacuated glass tube containing two electrodes*High voltage is applied across electrodes - stream of negatively charged particles from c ... 2/rq/m = V/BrOutline role of Cathode ray in*Electron gunoConsists of"XA thermionic cathode - ejects electrodes when heated"XA anode - collimator to subject beam to a thin stream"XGrids to control brig ...

(10 pages) 90 0 2.3 Mar/2004

Subjects: Science Essays > Physics

What Is Electrolysis

rent through a solution or molten salt (the electrolyte), resulting in the migration of ions to the electrodes: positive ions (cations) to the negative electrode (cathode) and negative ions (anions) t ...

(1 pages) 23 0 3.0 Jul/2004

Subjects: Science Essays > Physics

The History of the Battery

etals and a solution that would conduct the electricity. A battery is composed of two plates called electrodes. One of the electrodes contains a positive charge and the other a negative. Between the e ... ed by the chemical solution called electrolyte. The electrolyte separates the positive and negative electrodes. The completed circuit is formed when the electrodes are connected by a wire creating the ...

(4 pages) 50 1 4.1 Nov/2004

Subjects: Science Essays > Technology

Reaction between HCl and Marble Chips

hat the concentration of an electrolyte affects the current that can be passed through itApparatus: Electrodes,Beaker,Lab PackMeasuring CylindersWiresMaterials: Hydrochloric acid (HCl),WaterDiagram:Pr ... given time. I therefore believe that, there will be a peak to the graph as the surface area of the electrodes slowly reduces because of the numbers of ions 'swarming' towards it.Scientific Knowledge: ...

(3 pages) 59 4 3.3 Jan/2005

Subjects: Science Essays > Chemistry

Carbon and its allotropes

is known as being one of the most stable forms of carbon ever discovered. Graphite is also used for electrodes in electric furnaces and dry cells as well as for making crucibles in which metals are me ...

(1 pages) 30 1 3.8 Apr/2006

Subjects: Science Essays > Chemistry

Anode tube

cal insulator between the negative cathode and positive anode. Contains the vaccum and supports the electrodes.Vaccum; All air is excluded within the glass envelope. This prevents oxidation of the ele ...

(3 pages) 44 2 4.8 Apr/2006

Subjects: Science Essays > Physics

"The Tender Place" by Ted Hughes

nveyed very impressively.In the first lines, Ted Hughes refers to Sylvia Plath's temples, where the electrodes for ECT are placed, as "the tender place". The word "tender" reveals the fragility and de ...

(4 pages) 4781 0 0.0 Oct/2006

Subjects: Literature Research Papers > European Literature > Poetry

Neuroscience

l of the auditory neurons which make up the sensory nerve, as well as successful orientation of the electrodes implanted with those neurons. Lack of activity in a damaged cochlea leads to degeneration ...

(2 pages) 16 0 0.0 Aug/2001

Subjects: Businesss Research Papers

Murphy´s Law

persons were strapped on a rocket propelled sled which was brought to an abrupt halt shortly after. Electrodes fitted to a harness were supposed to show the effects of this drastic slow down. But some ...

(2 pages) 474 0 0.0 Nov/2001

Subjects: Businesss Research Papers

The Activity Of the Living Human Brain

nt to understand the levels of brain activity that are present during brain activity. Berger placed electrodes onto the scalp pick up the brain activity. Tiny voltages are detected as the neurone fire ...

(7 pages) 30 0 3.0 Nov/2007

Subjects: Social Science Essays > Psychology

Experiment: Galvanic Cells

ach electrolyte solution so that the ends are submerged inthe electrolyte solution. Collect the two electrodes that the two electrolyte solutions corresponds to.Thoroughly clean each of these electrod ... ) with emerypaper. Place each electrode into its corresponding electrolyte solution. Attach, to the electrodes, apiece of wire each using crocodile clips; then attach each of these two wires into a mu ...

(7 pages) 16 0 0.0 Jan/2008

Subjects: Science Essays > Chemistry

The Stanley Milgrim Study

e experiment involved a "teacher" and a "learner". The learner was placed in one room, hooked up to electrodes, and asked to answer questions administered by the "teacher". The "teacher", in the other ...

(4 pages) 48 0 3.0 Feb/2008

Subjects: Social Science Essays > Psychology

Conductivity

uce ions A+ and B-. The conductivity of the solution is a result of the movement of the ions to the electrodes. Cations are attracted to the negative electrode and the anions are attracted to the posi ... ivity will be observed as the concentration increases since, besides the electric field between the electrodes acting on a particular ion, the field of the surrounding ions will contribute as well.A f ...

(4 pages) 6 0 0.0 Sep/2008

Subjects: Science Essays > Chemistry

Implantable Digital Device For Tissue Stimulation

f a vagal nerve in a patient, the implantable digital stimulation system comprising: a plurality of electrodes at one or more intravascular locations in proximity to a vagal nerve inside the patient; ... ntrolling the electrical stimulation by programmable selection of at least some of the plurality of electrodes and by programmable selection of one of a plurality of stimulation waveforms, and (b) a s ...

(54 pages) 18 0 0.0 Nov/2008

Subjects: Science Essays > Biotechnology