Manuals and instructions for everything

 why should olive oil not be used as a fuel

why should olive oil not be used as a fuel

Vegetable oils in food, fuel and emulsions and trans fats Vegetable oils are important nutrients and provide a lot of energy. You must be careful not to eat excessive amounts to avoid becoming overweight. Vegetable oils are also used as fuels for vehicles. Some of this biodiesel is made from waste cooking oil and rapeseed oil. Such fuels are carbon neutral, which means that they release only as much carbon dioxide when they burn as was used to make the original oil by photosynthesis The chemical change that occurs in the leaves of green plants. It uses light energy to convert carbon dioxide and water into glucose. Oxygen is produced as a by-product of photosynthesis. This helps to reduce global warming. However, some people are concerned about whether it is ethical to use food crops in

 why do onions make our eyes water

why do onions make our eyes water

Why does chopping an onion make you cry? Unstable chemicals. Onions produce the chemical irritant known as syn-propanethial-S-oxide. It stimulates the eyes' lachrymal glands so they release tears. Scientists used to blame the enzyme allinase for the instability of substances in a cut onion. Recent studies from Japan, however, proved that lachrymatory-factor synthase, (a previously undiscovered enzyme) is the culprit (Imani et al, 2002). Lachrymatory-factor synthase is released into the air when we cut an onion. The synthase enzyme converts the amino acids sulfoxides of the onion into sulfenic acid. ...

 why do we put a ring on the fourth finger

why do we put a ring on the fourth finger

It's really hard to put on a wedding ring in space. The INSIDER Summary: The designation of the fourth finger on the left hand as the "ring finger" dates back to 1549. It was a way for the Anglican Church to distinguish their traditions from the Catholic Church. There's a myth from ancient Rome that the finger has a "lover's vein" leading to the heart. That's wrong. Most Westerners adopted the custom, but different religions have their own traditions. Most wedding traditions can be. And the reason people wear the wedding band on the fourth finger on the left hand dates back to one of the most contentious religious debates of all time. The actual use of wedding rings or wedding bands. But the decision to wear them on what's now known as the "ring finger" can be traced back only around 450

 why do they call the academy awards the oscars

why do they call the academy awards the oscars

THE MOST RECOGNIZED TROPHY IN THE WORLD, THE OSCAR STATUETTE HAS STOOD ON THE MANTELS OF THE GREATEST FILMMAKERS IN HISTORY SINCE 1929. Shortly after the formation of the Academy of Motion Picture Arts and Sciences in 1927, the fledgling organization held a dinner in the Crystal Ballroom of the Biltmore Hotel in downtown Los Angeles to set out its goals. Among the topics discussed that night was how best to honor outstanding moviemaking achievements and thereby encourage excellence in all facets of motion picture production. Agreeing to institute an annual award, the group turned its attention to creating a suitably majestic trophy. MGM art director Cedric Gibbons designed a statuette of a knight standing on a reel of film gripping a crusaderБs sword. The Academy tapped Los Angeles

 why wont my laptop mouse pad work

why wont my laptop mouse pad work

Short for Function, Fn is a key found on most laptop keyboards and some desktop computer keyboards to perform special functions, such as turning up the screen s and adjusting speaker volume. As you can see in the image above, this laptop has an Fn key with a green and blue Fn. Keys with symbols of the same color indicate that their secondary function will be activated by pressing that key with the Fn key. In this example, pressing and holding down the Fn key, along with the up or down arrows, would adjust the laptop screen brightness. The Fn key should not be confused with the found on computer keyboards. Where is the Fn key found on the keyboard? On laptop computers, the Fn key is almost always located on the bottom left-hand side of the keyboard, next to the. Not all have an Fn key.

 why is the windy city called the windy city

why is the windy city called the windy city

In 2011, NBC published a on how employees could "read the riot act" to their subordinates. Professional footballer Stцphane Mahц was once "read the riot act" after a rival player so hard he needed four stitches. In Bibb County, Georgia, a Superior Court Judge "read the riot act" to a of wayward teens in an effort to curb their bad behavior. The idiom, which has been in use for centuries, is generally thought to mean the admonishment of a person or persons who have committed an error in judgment. But the origin of the term "riot act" concerns a very particular wrongdoingБan unlawful public assembly that peace officers of the 16thб century fought with a pre-written warning to disperse or face serious repercussions. Like death. reports that the riot act was first passed by British

 why do we have remembrance day on 11th november

why do we have remembrance day on 11th november

very year in November, Pthe wars that have scarred our past and the bravery of the men and women who fought them. Armistice Day and Remembrance Sunday is aPchance to rememberPnot just those who fought, but what they fought for. , held on November 11 every year, commemorates the signing of the armistice between the Allies and Germany at 11am on 11 November 1918 - the eleventh hour of the eleventh day of the eleventh month. Although hostilities continued in some areas, the armistice essentially brought an end to fours years of fighting in the First World War. P In Britain, it is tradition to pause for aPtwo minute silence at 11am on November 11 to remember those killed in the two world warsPand thePBritish servicemenPkilled or injured since 1945. P The armistice was signedPin Ferdinand

 why do my victoria sponge sink in the middle

why do my victoria sponge sink in the middle

Cakes usually sink when the cake batter is not completely cooked; everyone s ovens are different so you need to find the optimum baking time for you oven. В Also towards the end of baking test the cake repeatedly to see if it is fully baked. If a skewer inserted into the cake does not come out clean, then bake the cake for a little longer. However other things can be the problem, here are a few: Over beating the batter and incorporating too much air the air can then cause a collapse. ...

 why does a vitamin d deficiency cause rickets

why does a vitamin d deficiency cause rickets

Children need vitamin D for bone growth and development. So do babies developing in the womb. Vitamin D helps us absorbP. Serious vitamin D deficiency can causeP, delayed motor development, muscle weakness, aches and pains, and fractures. Vitamin D deficiency in adults has also been linked to osteoporosis, some cancers, heart disease andP. If women dont get enough vitamin D during pregnancy, their children might develop neonatal hypocalcaemia (not enough calcium in the blood) or rickets later in childhood. Your child needs sunlight on her skin for her body to make vitamin D. She gets about 80% of her vitamin D this way. Scientists arent sure exactly how much sun Australian children need for good levels of vitamin D. But we do know that the amount of sun your child needs depends onP where

 why do some people have all the luck

why do some people have all the luck

Why do some people have all the luck while others are perpetually unlucky? Professor Richard Wiseman of the University of Hertfordshire was determined to get to the scientific bottom of the phenomenon of luck, and what he discovered may surprise you: I placed advertisements in national newspapers asking for people who felt consistently lucky or unlucky to contact me. Hundreds of extraordinary men and women volunteered for my research and over the years, have been interviewed by me. I have monitored their lives and had them take part in experiments. The results reveal that although these people have almost no insight into the causes of their luck, their thoughts and behaviour are responsible for much of their good and bad fortune. Take the case of seemingly chance opportunities. Lucky