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783. What is the difference between Table salt and Sea salt?

Table salt and sea salt have the same chemical composition, but different processing methods give them a slightly different taste and texture. Sea salt is produced by evaporating the water from seawater or saltwater lakes, leaving behind salt but also small amounts of minerals such as magnesium, calcium and potassium, which can affect flavour. The large salt crystals give it a relatively coarse texture. Table salt, on the other hand, is typically mined from salt deposits. It is washed, purified and stripped of any contaminants. Additives are then added to prevent it from clumping. Iodised salt also contains extra potassium iodide.
 
782. How does light travel down a fibre-optic cable?

At the core of the cable is a strand of plastic or pure optical glass about 0.01mm in diameter. Surrounding it is a highly reflective cladding with a different refractive index to that of the core. The refractive indices of each material are engineered to ensure that light always reflects back off the cladding and is never absorbed by it, regardless of whether the cable is straight or bent round. It's a bit like carrying a torch through a long winding tunnel lined with perfect mirrors.
 
781. How do hotel key cards work?

There are many types of key card systems used around the world, but their principles are all fundamentallyvery similar. When you check in to a hotel, the hotel receptionist uses a machine to store a code onto a magnetic strip or computer chip on your key card. This code matches the one stored by your hotel room’s electronic lock, which reads the code when you insert the card, and then switches on a small motor to unlock the door to your room. To change the code for each new guest, the lock is either sent a new code by a network, or the card and lock have the same preset list of codes. They can then be instructed to use the next one in the sequence when required.
 
Wengi tumeshapitia hatua hii ya kukutana na watu ambao ni wepesi kutukana, kudharau, kukejeli au kuhukumu watu. Ningependa kushare hadithi hii ya Kibuddha ili kila mmoja aielewe vyema.
 
Siku moja Buddha alikuwa anatembelea katika kijiji kwa ajili ya kufundisha Dhamma. Kulikuwa na kijana mmoja mwenye hasira na mkaidi katika kijiji kile akaanza kumtusi Buddha.
 
Akisema " Huna haki ya kufundisha watu" huku akisema kwa sauti na ukali. "Wewe ni mjinga kama watu wengine. Wewe ni muongo".
 
Akisema " Huna haki ya kufundisha watu" huku akisema kwa sauti na ukali. "Wewe ni mjinga kama watu wengine. Wewe ni muongo".
 
Buddha aliendelea kuonyesha amani, bila kukasirika. Akamuuliza;
"Niambie, endapo ukinunua zawadi kwa ajili ya kumpatia mtu, na mtu huyo akaikataa, Je zawadi hiyo inabaki kuwa ni ya nani?"
 
Buddha akatabasamu na kumwambia,
"Upo sahihi. Na ni sawa na hasira yako. Kama ukiwa na hasira kwangu na sijajisikia vibaya wala kuharibu amani yangu ya moyoni basi hasira, chuki, na matusi yako yanabaki kwako. Wewe ndiye unayeshikilia hasira yako na sio mimi. Wewe nyiye unayeumia na hasira yako na sio mimi. Wewe ndiye ambaye hauna furaha, na sio mimi. Ulichofanya utakivuna matokeo yake wewe mwenyewe uliyetenda..." " Kama ukitaka kuacha kujiumiza kwa matendo yako, achilia hasira, chuki, hukumu, na ongeza upendo na amani. Unapochukia wenzio, wewe ndio unayekosa raha na sio wao. Na unapowapenda wengine wewe ndiye unayefurahia raha na amani ya upendo."
 
Kijana yule alitulia muda wote na kufurahia mafundisho ya mwalimu huyo. Akajibu
"Ni kweli mwalimu, nakuomba unifundishe njia ya upendo. Ningependa kuwa mwanafunzi wako."
 
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