I was Batman The CW Batwoman’s pilot screened to fans during the show’s San Diego Comic-Con 2019 panel Saturday, with executive producers Sarah Schechter and Caroline Dries revealing details about the cameos and characters set up for the Ruby Rose-starring show.The upcoming season will feature an origin story for the Batman villain Hush.”The character of Tommy Elliot … ultimately becomes the supervillain Hush, but we’re seeing his origins of why he hates Batman so much,” Dries said after the pilot screening.Also to come for classic TV fans, actor Burt Ward, who played Robin in the 1960s Batman series, will be making a cameo at some point during the show’s first season. TV and Movies Post a comment 3:44 Share your voice 62 Photos Now playing: Watch this: The pilot episode, which we will dive into in a separate story, heavily features Rose’s Kate Kane in many fight scenes without her costume — a decision that was influenced by how the character is military-trained.”She’s actually getting thrown against the wall and punched in the face,” Dries said, noting that Rose’s character attended the fictional military academy of Point Rock Academy.Without getting too far into spoilers, Dries and Schechter mentioned that Kane’s time at the military academy would have taken place before the end of the “Don’t ask, don’t tell” policy, heavily affecting how Kane’s experience as an out lesbian went at the military academy. The CW The very best cosplay we saw at Comic-Con 2019 Tags Batwoman, who previously debuted during a crossover with The CW’s Arrow, The Flash and Supergirl series, will also be developing a stronger relationship with Supergirl as the shows begin to cross over further.Dries said that, while glimpsed during the show’s Elseworlds event, viewers will eventually “see that core bond move into a Kate-Kara friendship,” referencing Supergirl’s lead character of Kara Zor-El, played by Melissa Benoist.Ruby Rose’s casting as Batwoman was first revealed in August 2018, at the time with a confirmed appearance for the Elseworlds event with the possibility of a series. That series is now set to debut Oct. 6 on The CW. 0
Map of HabiganjA sub-inspector of police sustained stab injury in an attack of robbers on Chatiain-Ratanpur road in Madhabpur upazila of Habiganj on Monday night, reports news agency UNB.The injured is Zia Uddin, sub-inspector of Chatiain police outpost.S M Raju Ahmed, senior assistant superintendent of police, said a gang of robber attacked Zia around 10:00 pm while he was returning to police outpost from his workplace and stabbed him, leaving critically injured.Later, the injured SI was admitted to Habiganj Sadar Hospital.
Mandel Ngan/AFP/Getty ImagesSupreme Court nominee Brett Kavanaugh listens to President Trump announcing his nomination in the East Room of the White House on Monday. U.S. Supreme Court nominee Brett Kavanaugh is meeting with GOP leaders in Washington, D.C. after President Trump announced the federal judge as his pick for the High Court.If confirmed, what could his appointment mean for the Lone Star State? To learn more, Houston Matters’ host Craig Cohen talks with Emily Berman, assistant professor of law at the University of Houston Law Center. 00:00 /03:48 To embed this piece of audio in your site, please use this code: Listen X Share
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only. Explore further For the first time, scientists have experimentally demonstrated that sound pulses can travel at velocities faster than the speed of light, c. William Robertson’s team from Middle Tennessee State University also showed that the group velocity of sound waves can become infinite, and even negative. To rephase the spectral components, the sound waves were sent through an asymmetric loop filter on a waveguide of PVC pipe, about 8 m long. The 0.65-meter loop split the sound waves into two unequal path lengths, resulting in destructive interference and standing wave resonances that together created transmission dips at regular frequencies. Due to anomalous dispersion (which changes the wave speed), sound pulses traveling through the loop filter arrived at the exit sooner than pulses traveling straight through the PVC. With this experiment, the group velocity could actually reach an infinitely small amount of time, although the individual spectral components still travel at the speed of sound. “We also achieved what is known as a ‘negative group velocity,’ a situation in which the peak of the output pulse exits the filter before the peak of the input pulse has reached the beginning of the filter,” explained Robertson. “Using the definition for speed as being equal to distance divided by time, we measured a negative time and thus realized a negative velocity.”It might not seem that a negative velocity would exceed the speed of light, but in this case, Robertson said, the speed of the pulse is actually much faster than c. “Consider the pulse speed in a slightly less dramatic case,” Robertson said. “Say the peak of the output pulse exits the filter at exactly the same time as the input pulse reaches the beginning. In this less dramatic case, the transit time is zero and the speed (distance divided by zero) is infinite. So we were beyond infinite! (‘To infinity and beyond,’ to steal a line from Toy Story.) In our experiment, we measured a negative transit time corresponding to a negative group velocity of -52 m/s.”Although such results may at first appear to violate special relativity (Einstein’s law that no material object can exceed the speed of light), the actual significance of these experiments is a little different. These types of superluminal phenomena, Robertson et al. explain, violate neither causality nor special relativity, nor do they enable information to travel faster than c. In fact, theoretical work had predicted that the superluminal speed of the group velocity of sound waves should exist.“The key to understanding this seeming paradox is that no wave energy exceeded the speed of light,” said Robertson. “Because we were passing the pulse through a filter, the sped-up pulse was much smaller (by more than a factor of 10) than the input pulse. Essentially, the pulse that made it through the filter was an exact (but smaller) replica of the input pulse. This replica is carved from the leading edge of the input pulse. At all times, the net energy of the wave crossing the filter region was equal to, or less than, the energy that would have arrived if the input pulse had been traveling in a straight pipe instead of through the filter.”Is this phenomenon simply the result of a clever set-up, or can it actually occur in the real world? According to the scientists, the interference that occurs in the loop filter is directly analogous to the “comb filtering” effect in architectural acoustics, where sound interference occurs between sound directly from a source and that reflected by a hard surface.“The superluminal acoustic effect we have described is likely a ubiquitous but imperceptible phenomenon in the everyday world,” the scientists conclude.Citation: Robertson, W., Pappafotis, J., Flannigan, P., Cathey, J., Cathey, B., and Klaus, C. “Sound beyond the speed of light: Measurement of negative group velocity in an acoustic loop filter.” Applied Physics Letters 90, 014102 (2007).By Lisa Zyga, Copyright 2006 PhysOrg.com. All rights reserved. This material may not be published, broadcast, rewritten or redistributed in whole or part without the express written permission of PhysOrg.com. Citation: ‘Mach c’? Scientists observe sound traveling faster than the speed of light (2007, January 17) retrieved 18 August 2019 from https://phys.org/news/2007-01-mach-scientists-faster.html The ‘pulse’ of a volcano can be used to predict its next eruption In this schematic of the acoustical test system, the scientists could create superluminal group velocity of sound waves, as well as negative group velocity. In the latter case, the peak of the output pulse traveling through the loop filter exited the filter before the peak of the input pulse had reached the beginning of the filter. Image credit: Bill Robertson, et al. Past experiments have demonstrated that the group velocities of other materials’ components—such as optical, microwave, and electrical pulses—can exceed the speed of light. But while the individual spectral components of these pulses have velocities very close to c, the components of sound waves are almost six orders of magnitude slower than light (compare 340 m/s to 300,000,000 m/s).“All of the interest in fast (and slow) wave velocity for all types of waves (optical, electrical, and acoustic) was initially to gain a fundamental understanding of the characteristics of wave propagation,” Robertson told PhysOrg.com. “Phase manipulation can change the phase relationship between these materials’ components. Using sound to create a group velocity that exceeds the speed of light is significant here because it dramatically illustrates this point, due to the large difference between the speeds of sound and light.”The experiment was conducted by two undergrads, an area high school teacher and two high school students, who received funding by an NSF STEP (Science, technology, engineering, math Talent Enhancement Program) grant. The grant aims to increase recruitment and retention of students to these subjects.In their experiment, the researchers achieved superluminal sound velocity by rephasing the spectral components of the sound pulses, which later recombine to form an identical-looking part of the pulse much further along within the pulse. So it’s not the actual sound waves that exceed c, but the waves’ “group velocity,” or the “length of the sample divided by the time taken for the peak of a pulse to traverse the sample.” “The sound-faster-than-light result will not be a surprise to the folks who work closely in this area because they recognize that the group velocity (the velocity that the peak of a pulse moves) is not merely connected to the velocity of all of the frequencies that superpose to create that pulse,” explained Robertson, “but rather to the manner in which a material or a filter changes the phase relationship between these components. By appropriate phase manipulation (rephasing) the group velocity can be increased or decreased.”
“Realising you are an overweight individual, in itself, is likely to be quite stressful and results in making healthy choices in your lifestyle more difficult. It is a tricky finding for doctors,” said Dr Eric Robinson from the University’s institute of psychology, health and society.The team found that those who identified themselves as being “overweight” were more likely to report overeating in response to stress and this predicted subsequent weight gain. Also Read – ‘Playing Jojo was emotionally exhausting’The researchers looked at the lives of 14,000 adults in the US and Britain.They analysed data from time periods after the children had reached adulthood to find out their perception of their own weight —whether or not it was correct —and their subsequent weight gain over time. You would hope that making a person aware they are overweight would result in them being more likely to adopt a healthier lifestyle and lose some weight.“What is important is to tackle stigma in society. People with a heavier body weight have body image challenges. That is not surprising given the way we talk about weight as a society,” Robinson added in a paper published in the International Journal of Obesity.There are ways of encouraging people to make healthy changes to their lifestyle that don’t portray obesity as a terrible thing, the authors concluded. IANS
Kolkata: The facility of applying online for driving licence will become available in all the Regional Transport Offices and Assistant Regional Transport Offices in the state before Durga Puja.This comes at the time when the state government has made production of driving licence mandatory to buy motorbikes, a step taken to check road accidents.According to a senior official of the state Transport department, at present there are as many as 50 offices across the state from where driving licence is given to applicants following necessary tests. Also Read – Rain batters Kolkata, cripples normal lifeOne more office of ARTO is going to be added soon, with one coming up at Katwa. With inauguration of the ARTO at Katwa that is scheduled on September 3, the total number of the offices that deal with driving licence will go up to 51.The official said that till date, there are 28 such offices where the facility of giving online application to get driving licence is available.”We have set a target to complete developing infrastructure in all the offices for the same and we are hopeful that the facility will become available in all the offices before Durga Puja,” the official said. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedExplaining the process of applying online for driving licence, another official said that one needs to log in to the website www.parivahan.gov.in and click on “Driving Licence Related Services”. Subsequently, an applicant has to proceed as directed to key in all necessary information, including some mandatory fields. Finally, an application number will get generated, with which the applicant has to visit the RTO or ARTO along with all relevant documents in his or her district, to give biometric details and get the date and time when he or she can sit for an online test.The applicant will pass the test if six out of ten answers are correct and gets the learner licence within two days. In case of failure, one can again sit for the test after seven days of the first one. The same process has to be followed online to get the date and time for the trial for the permanent licence, between the 30th and 180th day from the day the learner licence is issued.