17 nov. 2018

Novedades en el Sistema Internacional de Unidades: kilo, amperio, kelvin y mol se redefinen

La Conferencia General de Pesas y Medidas ha modificado las definiciones de kilogramo, amperio, kelvin y mol. Estas unidades fundamentales quedarán a partir de ahora referidas a constantes físicas universales.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

15 nov. 2018

Crean vida artificial cuántica en la nube

Comportamientos tan propios de los sistemas vivos, como nacer, interaccionar, mutar, autorreplicarse y morir se pueden reproducir en el mundo cuántico. Investigadores de la Universidad del País Vasco han diseñado un algoritmo cuántico de vida artificial que sigue las leyes evolutivas de Darwin y lo han puesto en marcha a través de la nube en el ordenador IBM QX4, codificando en forma de cúbits el genotipo y el fenotipo de los organismos cuánticos.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

Crean vida artificial cuántica en un computador IBM Q

Comportamientos tan propios de los sistemas vivos, como nacer, interaccionar, mutar, autorreplicarse y morir se pueden reproducir en el mundo cuántico. Investigadores de la Universidad del País Vasco han diseñado un algoritmo cuántico de vida artificial que sigue las leyes evolutivas de Darwin y lo han puesto en marcha en el ordenador cuántico IBM QX4, codificando en forma de cúbits el genotipo y el fenotipo de los organismos cuánticos.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

Crean vida artificial cuántica en un supercomputador de IBM

Comportamientos tan propios de los sistemas vivos, como nacer, interaccionar, mutar, autorreplicarse y morir se pueden reproducir en el mundo cuántico. Investigadores de la Universidad del País Vasco han diseñado un algoritmo cuántico de vida artificial que sigue las leyes evolutivas de Darwin y lo han puesto en marcha en el superordenador IBM QX4, codificando en forma de qubits el genotipo y el fenotipo de los organismos cuánticos.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

14 nov. 2018

Una supertierra helada orbita alrededor de una estrella cercana

Un equipo internacional de científicos, liderado por un astrónomo español, ha encontrado poderosas evidencias de la presencia del segundo exoplaneta conocido más próximo a la Tierra. Se mueve alrededor de la estrella de Barnard, es 3,2 veces más grande que nuestro planeta y su temperatura ronda los –170 °C, demasiado  inhóspito para la vida.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

13 nov. 2018

Las propiedades eléctricas del agua cambian en el nanomundo

La capa de agua que cubre todas las superficies que nos rodean tiene propiedades eléctricas muy diferentes a las del agua normal, según los experimentos que han realizado investigadores de la Universidad de Manchester y el Instituto de Bioingeniería de Cataluña en nanocanales. Dentro de ellos el agua está eléctricamente 'muerta', no responde a los campos eléctricos, cuando lo habitual es que presente una constante dieléctrica alta.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

10 nov. 2018

Argentina: A UFO Over Palermo (Buenos Aires)?



Source: Fundación Argentina de Ovnilogía (FAO)
Date: 11.08.2018


Argentina: A UFO Over Palermo (Buenos Aires)?

A report submitted by Rodrigo Zion to Luis Burgos from FAO: "On Saturday, November 3 I was touring the forests of Palermo, Buenos Aires gazing at native plants and birds with group from the University and fellow enthusiastas. At approimately 10:00 a.m. I saw a BRIGHT OBJECT (emphasis in the original) in the clear skies. I couldn't tell if it was moving, but I could see that this alleged sphere was linked to something thin in its lower section, like a rod, perhaps similar in length to the object's diameter. Being that the tour of the forest had a set intinerary, I had to proceed with the rest of the group and lost the object from sight. I was able to take a picture of the object with my Huawei cellphone, but given the distance and resolution, barely anything can be seen. I do not know what this might have been."

Burgos adds: "We have hitherto not received similar reports in the region, but at the exact same time as the Palermo sighting, Josefina Ferrari and her mother Zulma Garrido were also alble to record an odd flying object at Cerro San Bernardo, Salta."
via Inexplicata-The Journal of Hispanic Ufology https://ift.tt/GCRz8J

8 nov. 2018

Desinfección solar de agua para mejorar la salud en África

Investigadores de la Universidad Rey Juan Carlos han desarrollado un modelo de simulación numérica para avanzar en la desinfección solar de agua, además de supervisar la efectividad de este proceso en comunidades rurales de Etiopía. El objetivo es reducir las tasas de enfermedades intestinales y absentismo escolar en esas zonas.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

6 nov. 2018

Primera tomografía de la Tierra con neutrinos

Investigadores del Instituto de Física Corpuscular han presentado el primer estudio de la densidad de nuestro planeta utilizando neutrinos, unas ‘partículas fantasma’ capaces de atravesar los cuerpos. Una técnica similar se empleó para descubrir una cámara oculta en la pirámide de Keops, y es análoga a tomar una radiografía de rayos X o un TAC.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

5 nov. 2018

El desorden es clave en las transiciones de fase de los materiales

Cuando un material como el dióxido de vanadio cambia de un estado aislante a otro conductor, la ruptura de los pares de iones se produce de forma muy desordenada, y no coordinada como se pensaba hasta ahora. El descubrimiento se ha realizado con el primer láser de rayos X del mundo y ofrece nuevas perspectivas en el campo de la superconductividad y para el control de la materia, además de sugerir un cambio en las explicaciones sobre transiciones de fases en los libros de texto.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

2 nov. 2018

Otras formas de hacer astronomía

Durante cientos de años la ciencia la hacían hombres y mujeres que no se dedicaban profesionalmente a ella. No existía la investigación profesional. Ahora la ciencia es una carrera, una profesión. Pero no siempre. Todavía existe una rama del saber en la que las aportaciones de los aficionados tienen un enorme peso: la astronomía. El próximo Congreso Estatal de Astronomía va a estar, en parte, dedicado a esa colaboración entre profesionales y amateurs de las estrellas.
via Matemáticas, Física y Química https://ift.tt/18ZbcUb

1 nov. 2018

Mexico: UFO Sighting "Is The Most Shocking" in Recent Memory



Source: Radio Santiago (www.radiosantiago.cl)
Date: 10.31.2018


Mexico: UFO Sighting "Is The Most Shocking" in Recent Memory

The UFO sighting in Rosarito, Baja California, Mexico can easily be catalogued as one of the most significant in recent memory.



The witness sharing the video made the following remarks on social media:

"Today, October 28, 2018, I witnessed five (5) UFOs over Rosarito, Baja California, Mexico. I was driving back to San Diego, California, with my grandmother at around 4:23 a.m.," he said. "We were having a regular conversation when suddenly everything went silent all I could do was point at the sky. I looked up and I saw five (5) of these things floating over the houses and the beach," he added.

"I stopped and immediately went live on Instagram to avoid speculations about video editing and other things," he concluded.

VIDEO AT: https://youtu.be/cNq65Ixebpc

[Translation (c) 2018 S. Corrales, IHU with thanks to Ana Luisa Cid and Guillermo Giménez]
via Inexplicata-The Journal of Hispanic Ufology https://ift.tt/GCRz8J

Uruguay: Truckers Claim Seeing UFO in Durazno



Source: PLANETA UFO and DuraznoDigital.uy (Uruguay)
Date: 11.01.2018


Uruguay: Truckers Claim Seeing UFO in Durazno

An audio recording circulated this past Monday - October 29, 2018 - on WhatsApp that purportedly reported the apparition, at 2:30 a.m., of a green light in the middle of a field. A loud detonation was heard afterward and the light climbed into the dark sky until it vanished.

According to the account, it all occurred on a road near Routes 19 and 16 between Villa del Carmen and Cerro Chato, some 45 kilometers from Sarandí del Yí, the area in which the well-known Sainz business is located, handling over 100 trucks per day, hailing from various communities.



The person who first tells the story of the light - which he subsequently refers to as a UFO - states that this case was not unique. In the same area of rural Durazno, another worker had made similar remarks.

The second truck driver says that the blue light was swinging alongside his vehicle, and after following him for a considerable stretch of road, turned and vanished into the sky.

We are sharing two audios (in a single recording) received at the newsroom. You may hear other details from those who claim to have witnessed an uncanny experience, which was accepted calmly and with a good sense of humor.

First Voice: "Around 2:30 in the morning I heard dogs barking, and I went out to take a look. I saw a green light and thought, damn, could it be a hunter? One who went out with a green lamp to spotlight critter (coughs). And so I looked at it and suddenly I saw it flying around the field, really fast, and then it went up to the sky, really high up. Then it disappeared. It spun and I never saw it again. So I thought, could it be a UFO? And that's what I believed. Half an hour later a trucker came by to fill up on gasoil, and he said to me: "Do you know that one of my fellow drivers on the road came across a green light that moved in every direction?" So I said, Ah, that's the same one I saw! I've seen the very same thing, I told him. [The trucker said] this happened in the middle of the countryside and it swung beside the truck, then moved up and up, there was a flash and it vanished. And that's where we left it, it was a UFO and so forth. Strange things that happen. A while later another trucker came by, the one in the audio, and he sent me an audio, saying a light appeared beside him and paced him, slowly, flanking him. It moved in every which direction. It was as if it was keeping him company before it flew up and disappeared. So I thought one must be nuts to see something like that (laughs)."

Second Voice
: "Have you sped up, sped up, sped up? Things were tough here last night in Los Sainz. I was on my way to Los Sainz when the lights on my truck cut out. They turned off twice and the truck was left without power. Someone else at Los Sainz had had a blue light appear before him. Took a photo of it in front of him [garbled] there was a flash, a blue flash. So I left Los Sainz, a few hundred meters out, looked to the side, driving easy and slow, and I saw a blue flash. Blue, very blue. It moved to and fro and then vanished. So I told myself, it's your tough luck, buddy. But then it went away, I don't know."


[Translation and transcription (c) 2018 Scott Corrales, IHU with thanks to Guillermo Giménez, Planeta UFO]
via Inexplicata-The Journal of Hispanic Ufology https://ift.tt/GCRz8J