Is solar power cheaper than nuclear power

first_img A new study out of Duke University, though, casts doubt on the idea that nuclear power is cheaper than solar power. Using information from North Carolina, the study shows that solar power may be more cost efficient than nuclear power. With costs dropping on the production of photovoltaic cells, and with solar cells becoming increasingly efficient, it appears that — in North Carolina at least — solar installations offer a viable alternative to nuclear power, which is the source for about 20% of the electricity in the U.S.The Energy Collective reports that some of the issues not addressed in the Duke study. Issues that may further support the idea that solar power could become a viable, cheap form of power in the not so distant future:Two factors not stressed in the study bolster the case for solar even more:1) North Carolina is not a “sun-rich” state. The savings found in North Carolina are likely to be even greater for states with more sunshine -Arizona, southern California, Colorado, New Mexico, west Texas, Nevada and Utah.2) The data include only PV-generated electricity, without factoring in what is likely the most encouraging development in solar technology: concentrating solar power (CSP). CSP promises utility scale production and solar thermal storage, making electrical generation practical for at least six hours after sunset.Power costs are generally measured in cents per kilowatt hour – the cost of the electricity needed to illuminate a 1,000 watt light bulb (for example) for one hour. When the cost of a kilowatt hour (kWh) of solar power fell to 16 cents earlier this year, it “crossed over” the trend-line associated with nuclear power.Of course, fossil fuels still represent about 70% of the electricity production in the U.S., and there is probably still some way to go before solar power (and other alternatives) reach a level of cost efficiency that would result in more widespread use. But perhaps this study offers encouragement — and justification — for using resources for further development of solar power technology. Image source: Wikipedia.org Citation: Is solar power cheaper than nuclear power? (2010, August 9) retrieved 18 August 2019 from https://phys.org/news/2010-08-solar-power-cheaper-nuclear.html 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. More information: Osha Davidson, “Study: Solar power is cheaper than nuclear,” The Energy Collective (July 27, 2010), theenergycollective.com/oshada … ower-cheaper-nuclear .John Blackburn and Sam Cunningham, “Solar and Nuclear Costs – The Historic Crossover”, www.ncwarn.org/wp-content/uplo … larReport_final1.pdf One of the issues associated with shifting from using fossil fuels to alternative energy sources is the cost. While adherents of alternative energy tout its benefits, many are skeptical, pointing out that such alternatives are just too expensive. Advocates of nuclear power point out that it is less polluting (if you don’t count storage of spent fuel) than fossil fuels, and that it costs less than alternatives like solar power. © 2010 PhysOrg.com Desert power: A solar renaissance Explore furtherlast_img read more

15 dead several injured as squall hits West Bengal

first_imgKolkata: The nor’wester that hit the city and other districts yesterday left 15 persons dead and 50 others injured, the police said today. Of the 15, seven died in the city, six in Howrah district and one each in Bankura and Hooghly districts respectively, the police said.Nearly 50 people were injured in incidents of wall collapse, uprooting of trees and electrocution, the police said.Chief Minister Mamata Banerjee has instructed the chief secretary to look into the situation and prepare a report on the damage and deaths caused by the storm. Also Read – Heavy rain hits traffic, flightsThe disaster management department has been asked to send teams to affected districts, state secretariat officials said.Among the seven casualties in the city, an autorickshaw driver and a woman died when a tree fell on the vehicle on Lenin Sarani in central Kolkata, the police said.Two other passengers of the autorickshaw succumbed to their injuries at a hospital late last night.Of the six deaths in Howrah, four persons were electrocuted after they were struck by lightning in Bali and Belur areas. One death was reported from Andul road when an electric pole fell on a person who was riding a two-wheeler. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killedA death of a woman has been reported from Dumurjola area of Howrah district, the police said.The nor’wester which hit the city with a gale force of 98 km per hour at around 7.42 pm yesterday uprooted 200 trees in 26 places of the city and disrupted traffic, the police said.Metro services were disrupted for over two hours from 7.50 pm.Suburban train services in Sealdah and Howrah divisions were affected as overhead wires had snapped.Departure and arrival of some flights, too, were delayed because of gutsy wind.last_img read more

Agitation continues at Presidency despite varsity proposal

first_imgKolkata: A section of students at Presidency University (PU) continued their agitation on Friday, ignoring the appeal of the university authorities to withdraw their agitation.The university had offered a proposal of slashing the counselling fees for the students, who find it difficult to furnish the same. However, the students stuck to their demand of reducing it for all students and went on with their sit-in demonstration at the first floor where the room of the Vice-Chancellor, Registrar and other senior varsity officials are located. Also Read – Speeding Jaguar crashes into Merc, 2 B’deshi bystanders killed”We have told them that the excess fee for counselling will not be charged from the students who have financial constraints,” said Debajyoti Konar, Registrar of PU. The university on Thursday had claimed helplessness in reducing the fees and had said that the state Joint Entrance Board has enhanced the counselling fees to Rs 500 from Rs 100. The agitating students also alleged that the university has been pursuing the admission process without publishing the merit list. They demanded publication of the same as they feel that admission without it may jeopardise transparency associated with the process. It may be mentioned that 38,000 applicants had appeared for the written test at the varsity. There are 705 seats in the undergraduate level. The first phase of counselling is scheduled to be held from July 17 to 20, while the second phase will be held on July 22 and 23.last_img read more

WB govt declares halfday holiday following Vajpayees death

first_imgKolkata: The West Bengal government has declared a half-day holiday in its offices and educational institutions today as a mark of respect to former Prime Minister Atal Bihari Vajpayee, who passed away yesterday evening in New Delhi at the age of 93. All state government undertakings, urban and local bodies, offices, government-aided schools and colleges will be closed after 2pm today, a senior official said, quoting a notification issued late last night. Chief Minister Mamata Banerjee had flown to Delhi from Kolkata yesterday evening to pay her last respects to the visionary leader.last_img

Why you can distinctly recall after 20 years

first_imgWhy is it that some people have a richly-detailed recollection of past experiences (episodic memory), while others tend to remember just the facts without details (semantic memory)?Actually, these different ways of experiencing the past are associated with distinct brain connectivity patterns that may be inherent to the individual and suggest a life-long ‘memory trait’, a new study from Rotman Research Institute, Canada, shows.“With ageing and early dementia, one of the first things that people notice is difficulty retrieving the details of events,” said study’s senior author Brian Levine from Rotman Research Institute. “Yet no one has looked at how this relates to memory traits.  Also Read – ‘Playing Jojo was emotionally exhausting’People who are used to retrieving richly-detailed memories may be very sensitive to subtle memory changes as they age, whereas those who rely on a factual approach may prove to be more resistant to such changes,” he said.In the study, 66 healthy young adults (average age 24) completed an online questionnaire describing how well they remember autobiographical events and facts.Their responses fell between the extremes seen in people with Highly Superior Autobiographical Memory (HSAM) or Severely Deficient Autobiographical Memory (SDAM) recently described by memory researchers. Also Read – Leslie doing new comedy special with NetflixThe researchers focused on connections between the brain’s medial temporal lobes and other brain regions.Those who endorsed richly-detailed autobiographical memories had higher medial temporal lobe connectivity to regions at the back of the brain involved in visual processes. Whereas those tending to recall the past in a factual manner (minus the rich details) showed higher medial temporal lobe connectivity to areas at the front of the brain involved in organisation and reasoning. The study was published online in the journal Cortex.last_img read more

Delhi Women need their azaadi too

first_imgSpeaking to Millennium Post, the DCW Chief Swati Maliwal Jaihind still feels that Delhi is the rape capital of the country and women of all classes in the city have many challenges to overcome. She feels that to change this scenario, the first step is to make women feel empowered, which would then lead to a healthy debate towards the strict measures of her ill- treatment by the society and certain men.What according to you are the challenges faced by women of the Capital? Also Read – ‘Playing Jojo was emotionally exhausting’In my view, Delhi is still the rape capital of the world and there are various reasons to support my argument. First of all, there is low conviction because of the less charge sheets filed by the police, further there is only one forensic facility under Delhi government which has been run ineffectively. Besides this, women still face inequality. Many of them are not economically empowered and many of them are also sexually harassed in their work place. Also Read – Leslie doing new comedy special with NetflixHave women from middle class, upper middle class come out of these challenges and are better off as perceived by many?Not at all! Women of all classes have certain challenges; in fact there are many city women who have come to us saying they are facing extreme domestic violence. I feel that somewhere middle class and upper middle class women still feel dependent on their husband. On International Women’s day, in fact we would be awarding a female cab driver. She was beaten by her husband repeatedly and after a while she left him and today she is an owner of two cabs and is also supporting her children. The need for independence is required among today’s women. You recently expressed disappointment over Union Budget allocation over women welfare. On what areas did you want the allocation to take place?The allocation towards the policing is minuscule. We must realise that the policemen in our city are over worked and work for even 22 hours a day. According to standard procedures, an investigating officer should only solve 50 cases a year, whereas here things are completely different.You were at the forefront of Soni Sori’s treatment. How can her struggle be an inspiration to the women of Delhi?First of all, good news is that she will be discharged soon from the hospital. The very fact that she had fought to protect her ideals is a huge source of inspiration for many. In fact she is so committed that she will go back again to Bastar to fight for her rights.Azaadi is the new buzzword…. How can Delhi women achieve their ‘azaadi’?(Smiles) For me, a Delhi woman needs ‘azaadi’ from her own inhibitions. She must free herself from the the patriarchal mindsets prevalent today and from the judgments she is subjected to for the choices she makes.last_img read more

Mamata slams BJP over Gujarat attacks on migrants

first_imgKolkata/ Ahmedabad: Reacting sharply to the incidents of attacks on “migrants” from Bihar and Uttar Pradesh in Gujarat, Chief Minister Mamata Banerjee attacked the BJP, saying: “It is dangerous and it is happening only in BJP-ruled states.” The Chief Minister said this in reply to a question when she was leaving Nabanna on Tuesday. She said: “This is dangerous. Despite the arrest of around 370 people in this connection, the situation has not improved.” Also Read – Rain batters Kolkata, cripples normal life”They are saying that they will not allow people of other castes, creeds and religions to stay there (Gujarat). It is a dangerous trend and I am afraid of the situation,” she added. Banerjee, who has been repeatedly attacking the BJP for disturbing peace and harmony in the country, said, “People from different parts of the country and of all religions stay in Kolkata. There is no problem at all. Everyone lives here in peace.””Such activities are taking place only in BJP-ruled states. They are creating confusion among the people,” Banerjee said, adding: “united we stand, divided we fall”. It may be recalled that the Chief Minister had earlier made a scathing attack at the Centre for the incidents which are the “outcome of intolerance”. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedShe also raised her voice against its various anti-people moves. The Chief Minister had attacked the Centre on Gandhi Jayanti as well, saying: “Today the country is passing through a crisis period and it is in a state of unrest. Steps are needed to be taken so that unity among people remains intact and the country doesn’t get divided. This is the country where people from all castes, creeds and religions remain together.’So, it is important to ensure that the communal harmony of the country doesn’t get disturbed. Today is the day to take oath that we will never let anyone divide or sell the country.” In a recent tweet on the day of International Day of Peace on September 21, the Chief Minister had stated: “…Respect for human rights and consequently, the right to live in peace and dignity, must always be respected.” When incidents of intolerance were taking place at different parts of the country, Banerjee took various steps in ensuring peace and harmony in Bengal. She took all necessary initiatives so that the peace and harmony of the state doesn’t get disturbed.Following her directions, the police and state administration have foiled several attempts of creating disturbances in the state. Banerjee had pointed out that spreading rumours and bringing in people from neighbouring states to create disturbance were attempts to hamper the steady growth of Bengal.Thousands of Hindi-speaking migrant workers have left Gujarat in the wake of violence following an alleged rape incident, even as industry representatives Tuesday said normalcy has returned after three days of disruptions at factories.Functioning at industries remained affected for a few days after violence erupted following the rape of a toddler allegedly by a man from Bihar but normalcy started returning Tuesday with units in north Gujarat resuming operations, they said.Sanand, a major industrial hub near Ahmedabad housing around 250 big and small industrial units, faced disruptions for at least three days as most of the factories remained shut with migrant workers staying away from work.last_img read more

Online video games may boost teenagers intelligence

first_imgWhile spending hours on Facebook or other social media sites can lead to bad results in school, playing video games may not have such adverse effects. A new study has found that online video games can even sharpen Mathematics, Science and reading skills in teenagers.The video games could help students to apply and sharpen various skills learned at school. The findings showed that students who played online games almost every day score 15 points above the average in Maths and 17 points above the average in science.“When you play online games you’re solving puzzles to move to the next level and that involves using some of the general knowledge and skills in Maths, reading and Science that you’ve been taught the day,” said Alberto Posso, Associate Professor at RMIT University in Melbourne, Australia.However, teenagers who regularly engage in social media sites are more likely to fall in school results, the researchers said.Students who used Facebook or chat every day scored 20 points worse in Maths than students who never used social media. “Students who are regular on social media are, of course, losing time that could be spent on study,” Posso added. But it may also indicate that they are struggling with Maths, reading and Science and are going online to socialise instead, the study said. Teachers can look at blending the use of Facebook into their classes as a way of helping those students engage as well as consider incorporating popular video games into teaching – so long as they are not violent ones, the researchers suggested.For the study, the team tested more than 12,000 Australian 15-year-olds in Maths, reading and Science, as well as collecting data on the students’ online activities.last_img read more

We are committed to reducing accidents in Bengal Mamata

first_imgKolkata: On the World Day of Remembrance for Road Traffic Victims, Chief Minister Mamata Banerjee stated that her government “is committed towards reducing incidents of road accidents in Bangla.”This comes at the time when the number of road accidents have gone down with initiatives taken by the administration and police, after the Chief Minister introduced the state-wide Safe Drive Save Life campaign in 2016. The Chief Minister tweeted on Sunday: “Today is World Day of Remembrance for Road Traffic Victims. Our government is committed towards reducing incidents of road accidents in #Bangla.” Also Read – Rain batters Kolkata, cripples normal lifeSince the day the Chief Minister launched the statewide “Safe Drive Save Life” campaign, a series of steps starting from creating awareness to setting up necessary infrastructure, were taken to check road accidents that claim several lives every year. With the steps taken, the number of accidents has gone down, resulting in safer roads. In the tweet, the Chief Minister further stated: “Our #SafeDriveSaveLife campaign has reduced such incidents significantly, earning praise of the Supreme Court.” Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedIt may be recalled that the drive has helped reduce the number of deaths due to road accidents by 13.34 percent in the past one year till December 2017, while the total number of road accidents have also gone down by 16.06 percent. The number of people who were injured has also decreased by 12.10 percent. In the first quarter of 2018, the state has witnessed a drop in road accidents by 22 percent, compared to the corresponding period in 2016. It was the least number of accidents recorded in the past three years. Fatalities due to road accidents have also gone down by 18 percent in the first quarter of 2018. The drop in the number of road accidents is the outcome of the massive awareness campaign carried out by the police. At the same time, the police have also taken strict measures to ensure use of helmet while riding two-wheelers. Refueling stations were directed not to sell petrol if a customer comes with a two-wheeler without wearing helmet. Similarly, bike racing on flyovers that had claimed some lives in and around the city, has also stopped with restriction imposed on riding of bikes on flyovers from 10 pm to 6 am. The state Transport department and police have also jointly carried out a statewide drive to ensure that drivers do not use mobile phones while driving, as it constitutes “nuisance or danger to the public under Rule 21 of the Central Motor Vehicles Rules, 1989 and the provisions of clause (f) of sub-section (1) of section 19 of the Motor Vehicles Act, 1988 empower a licensing authority to disqualify such offenders from holding a driving licence or revoke such licence.” The state Transport department has played a key role in the Safe Drive Save Life campaign, by allotting funds to police for carrying out necessary infrastructure development, including setting up of road signs and watchtowers along highways. It may be recalled that the car of MP Abhishek Banerjee had hit a milk van that was parked illegally along the highway near Singur in October, 2016. Now, constant vigil by the police has checked illegal parking on highways and the parking of vehicles now take place on service roads. The police are still continuing with the awareness campaign as people are still found violating traffic norms at times.last_img read more

Man held for trying to murder wife

first_imgDarjeeling: A man has been arrested for attempting to murder his wife with a knife in Siliguri.The incident occurred on Tuesday morning at Jabarbhita in Siliguri. The person was caught red-handed and was beaten up by locals before being handed over to the police. Around eight years ago, Suman Das had married Sampa Das. While Suman is a carpenter, Sampa works as a maid. They have two children. Allegations are that Suman Das used to return home in an inebriated state every night and beat up his wife. On Tuesday morning, a heated altercation broke out between the two. In a fit of rage, Suman took out a knife and attacked his wife. He stabbed his wife multiple times. Also Read – Rain batters Kolkata, cripples normal lifeHearing her screams, the neighbours arrived and caught Suman red-handed. They beat him up and later handed him over to the police. A case has been registered against Suman at New Jalpaiguri police station. In a critical state Sampa was admitted to Siliguri district hospital. She was then referred to North Bengal Medical College and Hospital. She had to undergo a surgery. “She used to be beaten up regularly by her husband since marriage,” alleged Ranjit Burman, a relative of Sampa.last_img read more