CULTURAL QA 01-2022-18 BEING A COMPILATION THERE MAY BE ERRORS
Q1 Ifyou are over forty, was life more peaceful before the mobile phone? A1 GopalkrishnaVishwanath Lived 69 years so far. No regrets. Look forward to the best yearsnow. Sat I am 72 and therefore nearly twice as eligible to answer this question. For me, peace does not dependon mobile phones. It depends on the circumstances surrounding me and my attitude andresponse to those circumstances. Those who knew the art of leading a peaceful life before the era ofmobile phones can still lead one now. I am one of them. I leave my mobile phone at home or switch it off when I don’t want to bedisturbed. I used to switch off my mobile phone at night when I wasprofessionally active. Nowadays, after my retirement, I don’t get calls atnight and so I don’t switch it off. I mute it when I am in a meeting or don’twant to be disturbed. I do not answer a call when I am driving or eating ortaking my afternoon nap. I find out who called and call him back later. When I used to switch off my mobile phone at night before going to bed, I never switched it on during thenight if I happened to wake up. I am never curious to see whatreaction my latest posting on social media has had and how many Likes, orUpvotes a posting has had. Mylandline number is available to my near and dear ones to call me if there is anemergency and they find that my mobile phone is switched off. I have told my near and dear ones to message me or WhatsApp me or emailme as far as possible and not call me unless it is essential or urgent. Irarely part with my mobile phone number and always decline to give my number to people I meet overthe internet. Many Quorans have asked me for my number while sendingme a private message on Quora to discuss some matter. I always decline andinstead give them my email address. If they wish to talk and not write I invitethem to arrange for a video/audio chat session on Zoom or Google Meet and sendme a link to join. It is up to us to know how tomake the best use of a mobile phone and how to prevent it from becoming a nuisance. Life is more convenientnow with a mobile phone that is used properly. It does not make my life lesspeaceful now. The same debate was common after TVs invaded our homes. When the internetand email became common, office goers brought up the same subject. Earlierletters were sent by post and it took a few days to get a response. That gaveus a lot of breathing time. With email, the responses come within minutes. Thevolume of mail has also increased exponentially. But those who know how to handle email overload do notallow it to disturb their peace. My solution to any disturbance of peace due to the mobile phone is tosimply switch it off for a few hours every day. I have given this advice tomany students for whom social media had become a serious distraction. I alsoadvise them to de-activate some of their social media accounts, particularlybefore exams. During my boyhood, it was notmobile phones or the internet but the radio that was accused of disturbing thepeace for some of us. Todaythe radio is a forgotten and ignored bit of technology. Will it happen tomobile phones in the future? When? And what will replace it? I wonder. Q2 Wouldit be a nice option to carpet floor a house in South India? A2 GopalkrishnaVishwanath The only Real investment I have trusted in my life is Real Estate7h No. Don’t carpet floors inSouth India. Our weather does not permit it. In Europe, USA and Canada, it is so cold that it helps to have a carpetbut in South India it is warm. No carpet is needed. Besides, there is a lot of dust in the air and they will settle on thecarpet. Cleaning the carpet to remove the dust will be another headache. In India, we are used to mopping the floor with a wet cloth. My advice isto spend on good quality flooring without carpeting. Q3 Whyare there no forests in Denmark, while Sweden and Norway are full of them? A3 Mats Andersson Livesin Sweden15h They cut them down to plantfields. (Well, most of them.) This is why Denmark has six timesthe population density of Sweden, and eight times that of Norway: they have more land suitable forfarming. It’s also why agricultural products is a big export business inDenmark, while Sweden and Norway are net importers of food. Q4 Whatare some mistakes to avoid while buying a water purifier? A4 Hind guard , AlwaysBring Value Answered 4h ago Before purchasing a water purifier, you should first determine the sourceand quality of the water (hardness, salinity, and TDS), as well as the type ofwater supplied to your area. 1. What is TDS in water, andhow much of it is considered safe to drink? According to WHO Total dissolved solids (TDS) are the inorganic salts andsmall amounts of organic matter that are present in solution in water. Calcium,magnesium, sodium, and potassium cations and carbonate, hydrogen carbonate,chloride, sulfate, and nitrate anions are the most common constituents. TDS level is as follows: Excellent: just under 300 mg/litre; good: 300–600 mg/litre; fair: 600–900 mg/litre; poor: 900–1200 mg/litre; and unacceptable: more than 1200 mg/litre (1). Water Extremely low TDSconcentrations may also be unacceptably due to their flat and insipid taste. Second, based on the quality and source of thewater, you can select a water purifier that best suits your needs. Types of Water Purifier: 1. Non-Electric Water Purifier: This type of purifier removes impuritiesfrom water. To remove odor, smell, and chlorine, some purifiers use UFtechnology, sediment filtration, and carbon filtration. 2. Electric Water Purifier: This type of purifier primarily removedissolved solids, viruses, and bacteria from water. UV + UF Technology: UV is usedto kill bacteria, viruses,and other microorganisms, whereas UF is used to suspend solids, largerparticles, and molecules from the water via a hollow membrane. This type ofwater purifier kills and eliminates bacteria and microorganisms, but it doesnot remove dissolved solids. RO Technology: The process notonly removes harmful particles butalso removes dissolved solids. This method transforms hard water into softwater. According to the World Health Organization(WHO), 600 mg/lit is typically considered to be good.Where you can use UV and UF technology to eliminate germs, pollutants. For High TDS RO technology is preferable. Q5 Whatwere the breakthroughs in the last 25 years that suddenly made LEDs thedominant lighting technology? The actual break thru's, like "they finallyfound out how to?" A5 Andrew McGregor PerformanceMeasurement Lead at Fastly (company) (2019–present)Sat The actual break through? Figuring out how to make an ultraviolet LED. The researchers who did thatwere awarded the Nobel Prize in 2014, it was that significant. ‘White’ LEDs aren’t actually white. They’re ultraviolet LEDs with a bitof phosphorescent material attached. The UV light excites the phosphor, whichre-radiates the energy over a broad spectrum. This is the same process as afluorescent light, and often a very similar phosphor. But the LED is far moreefficient than a discharge lamp at creating the UV in the first place. That means you can get LEDs with whatever colour temperature and spectrumyou want, more or less. An acquaintance got a house-lot of custom made LEDs atone point, just because he could. Q6 Whydid Chicago make the decision over 100 years ago to reverse the flow of theChicago River? A6 Franklin Pope Jan 10 The Chicago River initially drained into the water supply (Lake Michigan)of the City of Chicago. The City didn’t want a riverfull of sewage etc.contaminating the water supply and possibly causing disease etc. By reversing the flow of theRiver via a manmade canal - the Chicago River then eventually drained into theMississippi River whichempties into the Gulf Q7 Whydo many South Indian ladies wear white flowers in her hair backside? A7 Samarjeet Updated Jan6 In India, especially in South India, women wearing flowers on their headsis a frequent sight. After a shower, the women place the flower strands ontheir heads meticulously every morning. These flower strands provide the womena stunning appearance. Buthave you ever thought why ladies wear flowers in their hair every day, withoutfail? Flowers are more than simply pretty to look at; they have a deepermeaning. Every flower is endowed with its unique set of characteristics. Flowers are a representation of love,good fortune, joy, and prosperity. It is thought that if a ladywears the flower in her hair, it would bring happiness to her family. Flowers have a long and illustrious history. Flowers and ladies wearingflowers have diverse meanings in different cultures in India. In India, a girl is expected to wearflowers in her hair since it gives happiness and prosperity to the family.It's a sign that Goddess Lakshmi lives in the house and that money will neverdepart. As a result, wearing flowers is a sign of the family's well-being aswell as a way to decorate oneself. Q8 Whydid people collect rainwater from their roofs in a barrel rather than usingwater from rivers or a well? A8 Joga Rao, formerExport Manager, Answered 1h ago Well, lets see. Not all houseshave a river or a stream running close to the house. Even if they had, fetching water would be tiringunless you are a hardy village woman. Some houses have wells but drawing water would be tiring as well. Fetchingwater from a barrel close to a house would be the least tiring i guess. 2nd answer VenkateswaraSwamy Swarna, formerScientist, Metallurgist, Quality / NDT Manager at Department of Atomic Energy,India (1967-2008)Answered 1h ago Why not use the rain water that will otherwise run off the roof and intothe soil or drain? After somehalf an hour or so, the water that comes from the roof is quite clear. So, collecting that in a tank or a barrel and using it for bathing,washing vessels, gardening, car washing etc. should be fine. To that extent, they reduce the water intake from a well or river or thewater supply company. 3rd answer Mohd ZainAnswered 38m ago People collect water from rooftops or from open water by sky because theythink it's a fresh water and also they don't have to do anything just putbucket in open sky or rooftops it' will fill automatically. Mostly people in India do thesebecause they don't get water properly in slum areas. Whether boiling water is safe in itself for human consumption over RO/UVtreated water? It really depends on the quality of raw water. Simply boiling water may kill allthe bacteria, but will not decrease the mineral content as measured by totaldissolved solids (TDS) in it. Ifthe TDS in raw water is less than 300ppm, and it does not contain any visiblesuspended particles, one can simply boil, cool and filter it before drinking. For raw water with higher TDS, the Reverse Osmosis (RO) system comprisingessentially of three stage water purification as Filter + RO membrane + UVsystem, can eliminate suspended contaminants, reduce mineral content and killsome types of bacteria. In case of suspected high bacterial load in watersupply, or for consumption of an ailing person, the safest solution will be tofurther boil the RO water. Distilled water is undoubtedlythe purest form of water, but is not fit for drinking. All the above QA are from Quora website on 17-01- 2022. Compiled and posted by R. 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