Biology & Science Questions : How Does a Firefly Produce Light? English
A firefly produces light by taking advantage of a chemical reaction in which luciferin combines with oxygen in the presence of luciferase to...
A firefly produces light by taking advantage of a chemical reaction in which luciferin combines with oxygen in the presence of luciferase to produce oxyluciferin, energy and light. Discover how uric acid in a firefly's abdomen allow it to reflect light outwardly with help from a science teacher.
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Court shown fatal US police beating video - 10May12 - All Languages
Two US police officers have been ordered to stand trial in the death of a mentally ill homeless man following a violent arrest last summer....
Two US police officers have been ordered to stand trial in the death of a mentally ill homeless man following a violent arrest last summer.
California's Orange County Superior Court Judge Walter Schwarm made the ruling after a hearing that included surveillance video of the confrontation between the officers and 37-year-old Kelly Thomas in the city of Fullerton.
Officer Manuel Ramos is charged with second-degree murder and involuntary manslaughter. Jay Cicinelli is charged with involuntary manslaughter and assault or battery by a public officer. Both have pleaded not guilty.
The officers confronted Thomas while responding to reports that a homeless man was looking into parked cars at a transit center.
"This is another victory, on another battle," said Thomas' father, Ron. "We're going to start a new one with the trial."
John Barnett, Ramos' attorney, said he would seek another court's review of Schwarm's ruling and did not expect his client would end up facing a jury trial.
"We're disappointed that they were held to answer but we will seek review in an appropriate manner," he told reporters after the ruling. "He believes, and he is innocent."
Orange County District Attorney Tony Rackauckas said during the hearing that Ramos bullied a shirtless Thomas with his menacing remarks and aggressive stance — actions that would have led anyone to fear they were about to get beaten by police.
"Any person, any creature on this earth would have fear at that point," Rackauckas told the court during the preliminary hearing.
"You're going to fight or flee because this is an imminent threat of a serious beating by a police officer who is there with a baton and a gun and other police officers.... This is going to be a very bad deal," the prosecutor said.
Defence attorneys countered that police — who are authorised and trained to use force when necessary — viewed the incident as an encounter with a man who refused to give his name and continued to resist arrest even as multiple officers rushed to assist.
The three-day hearing was marked by repeated showing of clips from surveillance video and audio recordings of the confrontation. The footage includes scenes of officers pummelling and pinning down Thomas as he screams that he can't breathe and moans for his father until he goes silent and is taken away by medics, leaving behind a pool of blood.
Barnett, Ramos' attorney, said during the hearing that the video — which was introduced by the prosecution — shows that his client made a conditional threat during his conversation with Thomas, stating he wanted the man to start listening and following police orders, such as sitting with his legs stretched out and providing his name to officers.
"All that Kelly Thomas had to do was simply comply," Barnett said. "Officer Ramos just lifts him up, he's going to arrest him. ... Not only can he do it, he must do it. He is bound to do it."
"Officer Ramos didn't do anything that should or could kill Kelly Thomas," Barnett said, pointing out that his client is often seen on the video at the man's feet.
Prosecutors have argued that Ramos punched Thomas in the ribs, tackled him and lay on him to hold him down while Cicinelli — who arrived later on the scene — used a Taser four times on Thomas as he hollered in pain and hit him in the face eight times with the Taser.
Thomas lost consciousness and was taken to a hospital. He was taken off life support and died five days later.
The coroner's office found that Thomas died from compression of his chest that made it difficult for him to breathe and deprived his brain of oxygen, and facial injuries stemming from his confrontation with law enforcement.
In court, Schwartz, Cicinelli's attorney, challenged those findings, noting that testimony by a paramedic who treated Thomas at the scene indicates that Thomas was breathing, although with difficulty, during the confrontation.
Schwartz also defended his client's use of the Taser on Thomas, who was still struggling and resisting officers' efforts to handcuff him, and said Cicinelli only swung the Taser at Thomas' hand when the man made an effort to grab the weapon.
"To call that a crime is to effectively handcuff our police officers out in the field from dealing with any combative suspect," Schwartz said.
The hearing in a Santa Ana courtroom was marked by lengthy testimony from medical experts and graphic photos of Thomas' injuries, including multiple bruises and a bloodied eye, while he was lying on the autopsy table.
Attorneys repeatedly played portions of the grainy surveillance video, which was paired with audio from digital recorders worn by some of the officers who were present and which brought some of Thomas' supporters to tears and prompted them to leave the courtroom.
The incident last July prompted an ongoing FBI investigation to determine if Thomas' civil rights were violated, an internal probe by the city, protests by residents and an effort to recall three Fullerton councilmembers that is slated for next month's ballot.
The recall was sparked after angry residents chastised the council members for failing to take significant action regarding the incident.
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Firefly - Understanding Allah through Insects - English
The firefly is equipped with an amazing system. This insect has an organ in its body that produces fluorescent light. This light has great...
The firefly is equipped with an amazing system. This insect has an organ in its body that produces fluorescent light. This light has great significance for the firefly to preserve its race, because the female and male fireflies recognize each other by looking at their lights. The fluorescent organ of the firefly is composed of three layers just like the headlamps of an automobile. Cells that produce light lie at the bottom layer. The duty of these cells is to produce a combustible substance. This combustible substance reacts with oxygen controlled by an enzyme. As a result of this chemical reaction, the fluorescent light manufactured in a similar fashion to a factory is first transferred to the adjacent concave layer and then to the upper transparent layer where it is reflected as light. The perfect quality and 98% productivity rate of this fluorescent light astonished scientists examining fireflies. The light bulbs used for lighting purposes by people can only convert 5% of the received energy into light, the remaining 95% being lost in the form of heat. Because of this 95% heat which is released, we cannot touch a light bulb when it is on. Despite the fact that the firefly produces almost 20 times more light than a light bulb, the temperature does not rise, due to the cold nature of its light. Man can produce cold light only in laboratories, at the end of a series of chemical reactions. It is obviously irrational to claim that this complex lighting system has been designed and then installed in the body of this tiny insect by itself. More irrational than this is the claim of the theory of evolution that this system formed as a result of coincidences in nature. The perfection in the firefly's body is an indication that it is the product of a superior wisdom and infinite knowledge. Allah created all living species with distinct qualities and through them shows us His Eternal Might. In a verse of the Qur'an, people are summoned to ponder on this fact:
Among His Signs is the creation of the heavens and earth and all the creatures He has spread about in them. And He has the power to gather them together whenever He wills. (Surat ash-Shura: 29)
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Oxygen, our source of life - English
Oxygen The miraculous life source bestowed by Allah ...The invisible and imperceptible elixir of life we breathe into our lungs at every...
Oxygen The miraculous life source bestowed by Allah ...The invisible and imperceptible elixir of life we breathe into our lungs at every moment....We use this blessing from Allah every moment, every second. Moreover, this is not something we can ever buy or borrow from someone we know.But there is no reason to go far to find it. It is there ready for us, every moment, everywhere we go. Oxygen is bestowed on us as a blessing every single moment, as we sleep, work or talk. And we pay no price for it. But could we survive for long without it? Maybe two or three minutes, at most... Someone deprived of oxygen will first lose consciousness; brain death then begins within five minutes. After that, all the body's systems come to a stop, just like a machine disconnected from the mains, and death ensues. Everyone is careful to thank people who do nice things for them. But how often do you give thanks to our Creator, Allah, He Who gave you life
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