Howlers of the week 2003-2004

These are all genuine sentences and paragraphs that were written by students in their write-ups for the 2nd year practical on High Temperature Superconductivity. Remember that spelling mistakes, grammatical errors, and errors of logic are all entirely theirs, and have been reproduced exactly as they appeared on the student's script.

• Materials contain moveable particles of electricity.

• The electric current passses through the shorter bonds and is not able to pass through the longer bond.

• The Cu has 6 bonds, 4 in the plane, and 2 going up and down.

• When there are just Cu +2 atoms in the model there is electrical resistance to the flow of electrons as cu electrons are a resistance due to the electron repulsion when they meet.

• So no oxygen bonded to oxygen's, which would break the chain and prevent flow.

• In 1984, scientists started doping.

• If one electron is in a particular region is solid, the nuclei there move toward it to give a distorted local structure which is rice in positive charge.

• Consequently, it can be considered like a hole of positive charge which trap electrons to its elves. At low temperatures, metals have low resisitance as athe nucleases are moving les and so likely to interact with the travailing electrons.

• This copper atom is now 3+ and subsiquently steels and electron form the preceeding atom.

• But when obtaining the data it was thought of as though we were actually doing the experiment as to add an element of realism and to obtain realistic results.

• These values shoe the ratio of Cu³⁺ to Cu²⁺

• the concentrations of some of the reactants can increase the rate of the rate of the reaction, if they are increased.

• During this longer period if travel, it more likely that the electron should collide with a Copper atom and be lost.

• At low temperatures, 5-30K the copper atoms are more discrete.

• On paper a square planar geometry configuration would be lower in energy than the an octehedral arrangement.

• The coppers encompass orbitals...

• Eventually the electron will hit the a Cu nucleus and its energy will be transferred to her.

• Doping of a complex usually involves the addition of an element with a high atomic mass to the complex. This has the effect of "squeezing" the electrons tighter together.

• When the electron passes through one of the d-orbitals electrons...

• The superconductor has a roof.

• As it moves it repels the blue electrons on other chains. Essentially the coupling between blue and red electrons causes superconductivity current.

• Electrons can be carried along the chain by travelling form one electron to the next.

And one from this year's level 1 tutorials.

Q: Why does the Aldrich catalog recommend that hydrogen peroxide is kept in the fridge?

A: This is sound advice in the event of a spillage, since a spillage at higher temperatures would result in scalded students running around with bleached blond hair!