Relativistic Conformal Magneto-Hydrodynamics from Holography

We use the AdS/CFT correspondence to study first-order relativistic viscous magneto-hydrodynamics of (2+1) dimensional conformal magnetic fluids. It is shown that the first order magneto-hydrodynamics constructed following Landau and Lifshitz from the positivity of the entropy production is inconsistent. We propose additional contributions to the entropy motivated dissipative current and, correspondingly, new dissipative transport coefficients. We use the strongly coupled M2-brane plasma in external magnetic field to show that the new magneto-hydrodynamics leads to self-consistent results in the shear and sound wave channels.Comment: 11 page

A2_4 Doing Whatever a Spider Can

In Spiderman 2 there is a scene in which Spiderman stops a runaway train using his webbing to provide a counter-force. Using the information available this paper examines the material properties of the webbing under these conditions and finds the Young's modulus to be 3.12GPa, a reasonable value for spider silk

A2_2 Nanoparticle Hyperthermia Heat Transfer

This paper attempts to model the heating of a tumour by superparamagnetic iron oxide nanoparticles of diameter 15nm in an alternating 1T magnetic eld. It was calculated that in such a field alternating at the maximum angular frequency of the particles that the required 2.5K rise in temperature required for cell death could be achieved in 10 minutes using a minimum number of nanoparticles in the order of 108, assuming that all nanoparticles injected reached the target cells and that all of the heat was transfered to the tumour

A2_7 The falling Iron Sky

In the movie "Iron Sky", during the finale, the Nazi superweapon "Gotterdammerung" fires its main weaponry at the horizon of the Moon, blasting away a portion of the lunar surface and revealing the Earth above the new horizon. This paper calculates that the energy required for such a feat- on order of 1023J, would mean it would pose a critical threat to Earth

A2_6 A flawed Halo

In this paper the forces acting on a Halo installation from the popular 'Halo' series of games is examined to determine the maximum structural flaw size that could occur before critical structural failure and the destruction of the ring. The results imply any flaw of size at least 3.86*10^4m will result in the ring tearing itself apart, a worryingly low value for a structure of this size without some sort of new exceptionally strong material to make such a construct feasible

A2_8 Big M.A.C.

This paper attempts to model the amount of energy transmitted to air by drag when a Magnetic Accelerator Cannon, as described by the Halo series of games and books, is red vertically in atmosphere. For a normal MAC gun, the air is heated by 96,000K, enough to cause a column of plasma to form, expanding at Mach 22 in the form of a shockwave. The energy of impact is also found to be 60 kilotons, similar to a low yield nuclear blast. Comparatively the Super MAC is found to create near relativistic shockwaves, with enough energy to cause combustion of the atmosphere (ED = 1.051* 10^18J). The impact would be equivalent to 51 Giga-tons of TNT

A2_3 Deep Space 2: Journey to another star

In designing a "Generation Ship", this paper discusses the relativistic eects on the velocity and travel time of a journey at an initial 1g acceleration to the star system Alpha Centauri. It was found that such a journey would take 3.8 years for the crew, 6.5 years for an observer on Earth and would have a peak velocity of 0.89c