a power cord if there is a hookup to an external source." On 31 January 2019, Rossi's company released a new product (E-Cat SK) via live video stream. The product is reported as currently available to be leased by factories as a source of heat. After viewing the video, Tom Casten noted that "The E-Cat demonstration makes giant claims of scientific breakthroughs with no validation". Similarly, the Australian physicist and aerospace engineer Ian Bryce noted that, in the video demonstration, the "inputs, outputs, and measurement points are not defined, making the results largely meaningless", that the nuclear reaction purportedly occurring within the E-Cat SK would "release much deadly radiation. Yet the meters show zero ionizing radiation and no neutrons. Fortunate for the bystanders!" and concludes, regarding Rossi's E-Cat cold fusion device, "there is no real doubt about it being a fake". Reactions to the claims Theoretical astrophysicist Ethan Siegel and nuclear physicist Peter Thieberger have pointed out that the claims for the E-Cat are incompatible with the fundamentals of nuclear physics. In particular, the Coulomb barrier for the claimed fusion reaction is so high that it is insurmountable anywhere in the known universe, including the interior of stars. The reaction also would create gamma radiation that would have penetrated the few inches of shielding apparently provided by the E-Cat, inducing acute radiation syndrome in persons in the vicinity of the purported demonstrations. Given numerous other scientific inconsistencies – such as the ratio of isotopes in the supposed copper "fusion product" being identical to that in natural copper – the authors argued that it is now time "for the E-Cat's proponents to provide the provable, testable, reproducible science that can answer these straightforward physics objections." Peter Ekström, lecturer at the Department of Nuclear Physics at Lund University in Sweden, concluded in May 2011, "I am convinced that the whole story is one big scam, and that it will be revealed in less than one year." He cited the unlikelihood of a chemical reaction being strong enough to overcome the Coulomb barrier, the lack of gamma rays, the lack of explanation for the origin of the extra energy, the lack of the expected radioactivity after fusing a proton with 58Ni, the unexplained occurrence of 11% iron in the spent fuel, the 10% copper in the spent fuel having the same isotopic ratios as natural copper, and the lack of any unstable copper