A synthetic approach that improves absorber layers in perovskite solar cells could help them achieve their full potential and draw closer to the performance of leading gallium arsenide devices.
Los Juegos Olímpicos siempre han sido un asunto de números. Después de todo, el lema Citius, Altius, Fortius —más rápido, más alto, más fuerte— no significa mucho sin segundos, metros y kilos. ¿Qué tan rápido? ¿Qué tan alto? ¿Qué tan fuerte?
The flying AirCar car designed by visionary Slovak designer Stefan Klein has completed an 80 km flight from Nitra to Bratislava in 25 minutes, local media reported. This was the first flight by the vehicle between two international airports and the longest flight in distance at an average speed of 170 km/h.
After the flight, the vehicle underwent a mandatory after-flight check then was transformed into car mode and continued to the city centre on the ground to demonstrate all of its modes.
LIGO y Virgo publican hoy la observación de dos firmes candidatos a fusión de estrella de neutrones y agujero negro (NSBH) mediante ondas gravitacionales en el Run O3b. GW200115 y GW200105 son las fusiones de dos objetos, el primario con más de cinco masas solares (un agujero negro) y el secundario con menos de dos (una estrella de neutrones con alta probabilidad).
Todos los consensos sobre los que se levantaba el capitalismo del siglo XXI parecen haber saltado por los aires. Uno de los más destacados es el de la posición de la industria, en este caso física. Durante muchos años los países occidentales aceptaron deslocalizar sus fábricas a cambio de acceder a bienes de consumo baratos producidos en otros rincones del planeta. Esto tuvo efectos positivos y negativos. En el camino engrandeció a China.
Ahora la globalización parece estar cuadrando el círculo.
While the past century witnessed an unprecedented expansion in scientific and technological knowledge, there are growing concerns about a possible slowing of innovative activity [Jones, 2009, Gordon, 2016, Cowen and Southwood, 2019, Bhattacharya and Packalen, 2020]. Studies have documented declining research productivity in semiconductors, pharmaceuticals, agriculture, and other fields [Pammolli et al., 2011, Bloom et al., 2020].
The EU is struggling to reduce its energy consumption and is at risk of not meeting its 2020 energy efficiency target. In 2019, while primary energy consumption (for all energy uses, including transformation into electricity or heat) dropped for the second consecutive year, final energy consumption (by end users) remained stable at its highest level since 2010. The COVID-19 pandemic is expected to significantly reduce energy consumption in 2020. However, substantial changes in the energy system will be necessary to achieve the EU’s energy objectives and climate neutrality by 2050.
It all started when I came to the realization that I haven’t been seeing any new FSD Beta test drive videos in the news any more, and I started wondering why. The answer is because Tesla hasn’t updated the FSD Beta since FSD Beta 8.2 came out on March 4th, 2021. For Tesla owners and non-Tesla owners alike, this article should be pretty interesting, as we have made a timeline of both Autopilot progress since 2014 as well as FSD updates, but before we get to that, there are some basics that you should be aware of.
Si Apple n'a jamais confirmé son projet de produire une voiture électrique, certaines informations nourrissent régulièrement la rumeur. Selon Reuters, la firme de Cupertino discuterait avec les chinois CATL et BYD pour installer une usine de fabrication de batteries pour voitures aux États-Unis.
