RESENSI BUKU MENGENAL LEBIH DALAM CAHAYA

MENGENAL LEBIH DALAM CAHAYA

Cahaya di Alam Semesta adalah sebuah buku pengetahuan yang ditulis oleh Weni R.Dkk. Buku ini membahas segala sesuatu yang berkaitan dengan cahaya yang ada di alam semesta kita.

            Cahaya adalah radiasi elektromagnetik, baik dengan panjang gelombang kasat mata maupun yang tidak. Cahaya memiliki beberapa sifat, diantaranya adalah cahaya merambat lurus, cahaya menembus benda bening, dan cahaya dapat dipantulkan.      Pemantulan secara teratur terjadi jika cahaya mengenai permukaan benda yang rata. Sedangkan cahaya dipantulkan secara baur jika cahaya mengenai permukaan benda yang tidak rata.

            Pelangi merupakan fenomena optik dan meteorologi yang  menghasilkan spektrum cahaya yang (hampir) bersambung di langit. Pelangi terbentuk saat matahari bersinar setelah turun hujan. Pelangi membentuk sebuah lengkungan yang berwarna-warni dengan warna merah di lengkung paling luar dan ungu di lengkung paling luar.

          Tahukah kalian apa yang disebut sumber cahaya? Sumber cahaya adalah sesuatu yang menghasilkan cahaya. Sumber cahaya yang terbesar di alam adalah matahari. Keberadaannya membuat kita dapat melihat dunia ini.

          Matahari adalah bintang terdekat dari bumi dengan jarak rata-rata 149.680.000 kilometer. Matahari merupakan sebuah bola gas raksasa yang berpijar dan ternyata bentuknya tidak benar-benar bulat. Warna-warna dalam cahaya putih matahari dapat dipecahkan menggunakan prisma menjadi jalur warna. Jalur warna ini dikenal sebagai spektrum.

          Di permukaan matahari terdapat jilatan api yang menjulang hingga mencapai ketinggian 100.000 kilometer ke angkasa yang disebut “Sun Flare”. Semburan sun flare ini dapat mengganggu gelombang komunikasi. Sejak zaman dahulu, cahaya sudah membangkitkan rasa penasaran beberapa ilmuan besar. Diantaranya Isaac Newton dan Ibnu Al Haytham. Al Haytam merupakan salah satu ilmuan perintis yang meneliti tentang cahaya lebih awal dari Newton. Buku ini merupakan hasil karya sang penulis lulusan Fakultas Sastra Universitas Gadjah Mada dengan Jurusan Sastra Indonesia di Yogyakarta. Ditulis dengan bahasa yang santai dan mudah dipahami, buku ini sangat cocok untuk dibaca oleh anak-anak.

          Dalam buku ini, penulis juga menyelipkan gambar-gambar yang berwarna dan terdapat glosarium sehingga kata-kata yang tidak dimengerti oleh pembaca dapat dilihat pada halaman glosarium tersebut. Kita juga dapat menemukan berbagai jenis percobaan yang berkaitan dengan cahaya yang dapat kita lakukan sendiri di rumah. Kekurangan buku ini adalah dalam buku ini, tidak terdapat kata pengantar. Cover buku juga kurang menarik. Meskipun buku ini memiliki sedikit kekurangan, tapi tentu tidak menjadi masalah, karena, isinya memang sangat berguna bagi kita. Banyak sekali pengetahuan yang dapat kita ketahui setelah membaca buku ini khususnya pengetahuan tentang cahaya.

5 Simple Ways to Improve Your Bad Diet Today

Glow Wellness/Getty Images



Not happy with your unhealthy diet? You're not alone. So many people eat a diet of heavily processed, high-calorie foods. The result is excess weight, that sluggish feeling and eating a bad diet isn't good for your health.

Are you on a mission to improve your unhealthy eating patterns? It can seem like a long uphill battle, but with these easy tips you can get started on your dietary quest.

1. Drink water instead of soda.

If you're getting ready to grab a bottle or can of sugary soda, just walk away and go pour yourself a glass of water. You'll instantly save calories by eschewing the sugar. Drinking water is a good habit to form. If you're not a fan of plain water, you can dress it up with sliced fruits.


Alternatively there are zero-calorie beverages sweetened with various non-nutritive sweeteners.
Miss the fizziness of soda? Go to the grocery store, pick up bottles of mineral water -- look for brands enhanced with a little fruit flavor. But watch out for 'flavored waters' that are flavored with sugar or high fructose corn syrup -- they're just as high in calories as sodas.

2. Hide the treats and bring forth the fruit.

If you have bags of cookies, candy or other treats in plain sight -- by all means go hide them. Out of sight, out of mind. That doesn't mean you can't have the occasional treat, but if they're not sitting out, you're less likely to be tempted to grab one whenever you walk by.

With the same idea in mind, if you have fresh fruit like apples, bananas, oranges and pears lurking in your cabinets or refrigerator, bring them out. Put them in a big attractive bowl on your counter or table. If you don't have any fresh fruit -- add some to your grocery shopping list.

How I Consistently Wake Up (By Allah’s Permission) 45 Minutes Before Fajr Adhan

One of the challenges that a Muslim faces when trying to wake up for Fajr everyday is the constant shifting of the Fajr prayer. Depending on the season you’re in, it constantly shifts either few minutes forward each day or few minutes back each day. Thus, it can be difficult to keep up with a varied Fajr schedule throughout the year.



This varied schedule poses three challenges for a productive Muslim:
It’s difficult to “train” your brain to wake up at a certain time each day. When you read productivity books, their advice is to always wake up early around the same time each day, e.g. 5am. This helps train your brain to wake you up early regardless of how late you slept the night before. However, for a Muslim, this is not realistic, especially with the shifting time for Fajr prayer, which can start as early as 1am or 2am or as late as 7am, depending on the season and which part of the world you’re in.
It’s difficult to maintain a regular “night” prayer routine. If you want to benefit from the last third of the night and get up and pray, you cannot have a consistent schedule. In some seasons, this will require you to wake up as early as 1am or 2am and in some seasons, you’ll need to wake up at 5am or 6am. Again, it can be difficult for you to stay consistent.
You cannot maintain a consistent schedule or morning routine. Since your morning keeps expanding and contracting depending on what time you have to wake up for Fajr prayer, having a consistent morning routine can be quite challenging.
So How Do You Overcome This Challenge?

Taylor Swift Just Trademarked A Bunch Of Phrases From Her Latest Album

Taylor Swift since the release of '1989' has basically dominated American pop culture across all forms of media.

She's also become quite a figure in the entertainment business. Earlier this year, she made the decision to rip all of her albums off Spotify, saying: "Everybody's complaining about how music sales are shrinking, but nobody's changing the way they're doing things. They keep running towards streaming, which is, for the most part, what has been shrinking the numbers of paid album sales."

Now, in another business move, she's trademarking catchphrases from her latest album "1989," according to Rolling Stone.

She's trademarked five phrases in all with the US government, according to the legal database Justia.

Shakira Welcomes a Baby Boy!

Shakira and her longtime partner, Gerard Piqué, have just welcomed the birth of their second son, Sasha Piqué Mebarak. Shakira announced the arrival of her son, Sasha Piqué Mebarak, on her website and explained the meaning behind his name. "The name Sasha is of Greek and Russian descent and means 'defender of mankind' and 'warrior,'" her blog states. Sasha arrived Thursday night via C-section at hospital Quirón-Teknon de Barcelona. Sacha joins big brother Milan in the family fold. Although Shakira kept a fairly low profile during her second pregnancy, which was first revealed in August, the 37-year-old blonde beauty has always been open about her plans to expand her family. "I would love to have eight or nine kids with Gerard," she told Latina magazine. "My own fútbol team." Pretty ambitious, right?

PIDATO

Assalamualaikum Wr.Wb. Selamat pagi dan salam sejahtera.

Yang terhormat Dra. Tutut Sri Wahyuni selaku Kepala SMP Negeri 20 Malang,

Yang terhormat Bapak / Ibu guru, serta teman-teman yang saya cintai dan saya banggakan.

Pertama-tama, marilah kita ucapkan puji syukur kehadirat Tuhan Yang Maha Esa atas berkah dan karunia-Nya, kita semua dapat berkumpul di pagi yang cerah ini tanpa halangan apapun. Pada kesempatan ini, saya akan menyampaikan pidato tentang “Lingkungan Asri, Belajar Sepenuh Hati.”

Saudara-saudara, salah satu cara untuk meningkatkan kualitas sumber daya manusia adalah dengan bersekolah. Memang banyak cara lain yang dapat ditempuh untuk memperluas dan memperdalam ilmu pengetahuan. Namun, sekolah tetap yang utama, karena melalui sekolah, siswa tidak hanya belajar akademik, namun juga bersosialisasi, dan belajar untuk bertata krama yang akan menjadi modal utama untuk terjun langsung ke masyarakat kelak. Sekolah juga merupakan keluarga kedua bagi kita selain keluarga di rumah. Jadi, sekolah yang nyaman juga akan turut berpengaruh terhadap keberhasilan siswanya dalam belajar.

Saudara-saudara, sekolah yang nyaman adalah sekolah yang mampu membuat siswa betah belajar dan merasa senang. Sarana dan prasarana yang baik misalnya, gedung yang rapi, bersih, lingkungan yang nyaman, buku-buku yang lengkap, dan kelas yang memadai atau layak untuk digunakan, sehingga suasana belajar-mengajar akan terasa nyaman. Sebagai bagian dari upaya pelestarian lingkungan, di SMP Negeri 20 Malang telah melakukan program penghijauan dengan penanaman pepohonan dan tanaman-tanaman hias, mengingat letak sekolah berada tepat di depan jalan raya yang selalu ramai kendaraan bermotor. Dengan hal ini, polusi udara dapat diminimalisir. Polusi udara seperti suara bising yang dapat mengganggu kegiatan sekolah dapat diatasi dengan bekerja sama dengan pemerintah setempat untuk memberi peraturan agar jumlah kendaraan bermotor dapat dikurangi, mengurangi laju kendaraan, tidak membunyikan klakson, dan lain-lain. Selain itu, Rimbunnya dedaunan pepohonan dapat memerangkap gelombang suara sehingga mengurangi tingkat kebisingan. Dengan udara yang bersih, nantinya dapat membuat suasana lingkungan di sekolah lebih nyaman dan penggunaan pendingin ruangan atau AC dapat diminimalisir.

FEMALE SINGERS TO HAVE SCORED A NO.1 DEBUT ALBUM & SINGLE

Meghan Trainor Debuts with a No. 1 Song & Album
Meghan Trainor debuts 'Title' at No. 1 in America this week with sales of 195,000, according to Nielsen Music.

She is the 13th woman to have scored a No. 1 debut album and a No. 1 debut Single in the US. 'Title' includes her debut smash "All About That Bass," which stayed at no.1 for eight weeks becoming Epic's longest-reigning No. 1 ever, passing the seven-week reigns of Michael Jackson's "Billie Jean" and "Black or White".

FEMALE SINGERS TO HAVE SCORED A NO.1 DEBUT ALBUM & SINGLE
1. The Singing Nun (1963)
The Singing Nun, "Dominique"
2. Tiffany (1987-88)
Tiffany, "I Think We're Alone Now"
3. Mariah Carey (1990-91)
Mariah Carey, "Vision of Love"
4. Ms. Lauryn Hill (1998)
The Miseducation of Lauryn Hill, "Doo Wop (That Thing)"
5. Britney Spears (1999)
...Baby One More Time, "...Baby One More Time"
6. Christina Aguilera (1999)
Christina Aguilera, "Genie in a Bottle"
7. Alicia Keys (2001)
Songs in A Minor, "Fallin' "
8. Ashanti Official (2002)
Ashanti, "Foolish"
9. Kelly Clarkson (2002-03)
Thankful, "A Moment Like This"
10. Beyoncé (2003)
Dangerously in Love, "Crazy in Love"
11. Leona Lewis (2008)
Spirit, "Bleeding Love"
12. Ke$ha (2010)
Animal, "TiK ToK"
13. Meghan Trainor (2014-15)
Title, "All About That Bass"

Trainor has added a second Hot 100 top 10 from 'Title' as "Lips Are Movin" has reached No. 4. Of the 13 leading ladies above, only five have followed their debut No. 1 single directly with a second top five hit. Trainor is the fifth, after Tiffany, Carey, Aguilera and Beyonce.

"In the year that I have known and worked with Meghan, I've been consistently amazed by the depth of her talent and the incredible craft that she displays in her songwriting and effervescent performances," says Epic chairman and CEO Antonio "L.A." Reid, who signed her to the label nearly a year ago after she auditioned by singing and playing the ukulele. "Meghan has tapped into a positive, infectious groove that cuts across just about every genre that exists in music today."

https://www.facebook.com/worldmusicawards?fref=nf

Happy Birthday Emma Bunton!

Happy Birthday Emma Bunton!
Emma Lee Bunton (born 21 January 1976) is a Singer and member of the girl group the Spice Girls formed in the 1990s. She is known as Baby Spice because she is the youngest member.

Bunton's debut solo album, 'A Girl Like Me' was released in the United Kingdom on 16 April 2001 by Virgin Records. The album debuted and peaked at number four on the UK Albums Chart. It was certified gold by the British Phonographic Industry for sales in excess of 100,000 copies in 2001. The album spanned the UK and New Zealand No. 1 single "What Took You So Long?" as well as top hits "What I Am" and "Take My Breath Away" and "We're Not Gonna Sleep Tonight".

Bunton's second album, 'Free Me', was released in 2004 through 19 Entertainment/Universal Records with 4 hit singles including "Free Me", "Maybe", "I'll Be There" and "Crickets Sing for Anamaria". She reunited with the Spice Girls in 2007 for an international tour and greatest hits album. From 2003 to 2012 Emma Bunton Official had a recurring role on the BBC comedy series Absolutely Fabulous. She performed at the 2012 Summer Olympics closing ceremony on 12 August with the Spice Girls.

Bunton's television appearances include being a judge on the ITV skating show 'Dancing on Ice' and the ITV entertainment series 'Your Face Sounds Familiar'. She has guest hosted a number of shows including GMTV, Lorraine and This Morning Summer.

https://www.facebook.com/worldmusicawards?fref=nf

TOP 20 SINGLES IN THE UK THIS WEEK

Mark Ronson's "Uptown Funk" tops Official UK Singles Chart for a fifth week!

TOP 20 SINGLES IN THE UK THIS WEEK
1. Uptown Funk - Mark Ronson ft. Bruno Mars
2. Wish You Were Mine - Philip George
3. Take Me To Church - Hozier
4. Up - Olly Murs ft. Demi Lovato
5. Thinking Out Loud - Ed Sheeran
6. Blank Space - Taylor Swift
7. Heroes (we could be) - Alesso ft. Tove Lo
8. Something I Need - Ben Haenow
9. Promesses - Tchamii ft. Kaleem Taylor
10. Like I Can - SAM SMITH
11. All About That Bass - Meghan Trainor
12. Real Love - Clean Bandit ft. Jess Glynne
13. Elastic Heart - Sia
14. Outside - Calvin Harris ft. Ellie Goulding
15. I Loved You - Blonde ft. Melissa Steele
16. The Nights - Avicii
17. Budapest - George Ezra
18. Night Changes - One Direction
19. Chandelier - Sia
20. Wrapped Up - Olly Murs ft. Travie McCoy

https://www.facebook.com/worldmusicawards

OFFICIAL TOP 20 ALBUMS IN THE UK THIS WEEK

OFFICIAL TOP 20 ALBUMS IN THE UK THIS WEEK
1. Wanted On Voyage - George Ezra
2. X - Ed Sheeran
3. In The Lonely Hour - SAM SMITH
4. 1989 - Taylor Swift
5. Hozier - Hozier
6. Never Been Better - Olly Murs
7. A Perfect Contradiction - Paloma Faith
8. Caustic Love - Paolo Nutini
9. Four - One Direction
10. Chapter One - Ella Henderson
11. Royal Blood - Royal Blood
12. Motion - Calvin Harris ft. Ellie Goulding
13. Liquid Spirit - Gregory Porter
14. III - Take That
15. 1000 Forms Of Fear - Sia
16. The Endless River - Pink Floyd
17. No Sound Without Silence - The Script
18. Partners - Barbra Streisand
19. Sonic Highways - Foo Fighters
20. Ghost Stories - Coldplay

https://www.facebook.com/worldmusicawards