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Gravitational Waves Are Awesome Teacherflix 5 Views • 7 months ago

Everything you need to know about gravitational waves. In February 2016 scientists announced the first detection of gravitational waves by humans on Earth. This was a huge, world changing, discovery. The gravitational waves were caused by a pair of colliding black holes 1.3 billion light years away 1.3 billion years ago. This video summaries all the of the mind blowing facts about the gravitational waves and describes LIGO, the incredibly sensitive telescope that detected them.

#gravitationalwaves #space #DomainOfScience

If you would like to buy a poster you can get one here http://www.redbubble.com/people/dominicwalliman/works/24649310-gravitational-wave-astronomy?asc=u&p=poster&rel=carousel

Errata and clarifications.

I endeavour to be as accurate as possible in my videos, but I am human and definitely don’t know everything, so there are sometimes mistakes. Also, because my videos are summaries of some quite complex science, I make simplifications. Some of these are intentional because I don’t have time to go into full detail, but sometimes they are unintentional and here is where I clear them up.

1. I got the month of the original detection wrong! It was September 2015, not November 2015. Silly me, my apologies.
2. “1.3 billion years ago, 1.3 billion light years away” This is incorrect and an oversight on my part. I completely forgot to take into account the expansion of the Universe. The resulting black hole is 1.3 billion light years from us today, but was closer to us when the collision happened, which means that it happened less than 1.3 billion years ago. I tried to work out exactly when but was stumped because I couldn’t find the function for the acceleration of the expansion of the universe. The redshift of the signal from the black holes was about 10%, so I thought the collision was 10% closer in time than 1.3 billion years i.e. 1.18 billion years, but I think it might be a bit more complicated than that.
3. LIGO schematic animation. I made a couple of silly errors here. The first circular mirror that the laser hits should be 90º to the way I oriented it: half the laser light is transmitted and half reflected, each one going up a different arm.
4. LIGO schematic animation. When the laser bounced back and forth it should bounce between the two suspended mirrors and not go all the way back to the diagonal mirror.
5. VIRGO is near Pisa, not at Trento as I drew on the map. I said the right thing but drew the wrong thing. My apologies.
6. ‘A second even more powerful collision.” Wrong again! The second collision was less powerful and the signal was more buried in the noise.

I’m not happy with the number of flat out mistakes I made on this one! I will try better in the future. I blame it on the Christmas spirits.

If you would like to find out more about gravitational waves and the detection here are the original papers and some very informative links.

Main LIGO scientific paper: http://journals.aps.org/prl/ab....stract/10.1103/PhysR
Supplementary LIGO paper: http://iopscience.iop.org/arti....cle/10.3847/2041-820

Articles:
http://physicsworld.com/cws/ar....ticle/news/2016/feb/
http://www.nature.com/news/the....-black-hole-collisio
http://www.businessinsider.com..../black-hole-collisio
http://www.space.com/33176-gra....vitational-waves-fro
http://www.ligo.org/science/Pu....blication-GW150914/i
http://www.nature.com/news/gra....vitational-waves-6-c
http://www.nature.com/news/the....-black-hole-collisio
What they sound like:
http://www.vox.com/2016/6/15/1....1948618/ligo-gravita

Also, if you enjoyed this video, you will probably like my science books, available in all good books shops around the work and is printed in 16 languages. Links are below or just search for Professor Astro Cat. They are fun children's books aimed at the age range 7-12. But they are also a hit with adults who want good explanations of science. The books have won awards and the app won a Webby.

Frontiers of Space: http://nobrow.net/shop/profess....or-astro-cats-fronti
Atomic Adventure: http://nobrow.net/shop/profess....or-astro-cats-atomic
Intergalactic Activity Book: http://nobrow.net/shop/profess....or-astro-cats-interg
Solar System App: http://www.minilabstudios.com/....apps/professor-astro

Find me on twitter, instagram, and my website:
http://dominicwalliman.com
https://twitter.com/DominicWalliman
https://www.instagram.com/dominicwalliman
https://www.facebook.com/dominicwalliman

Alphabet ABC Flashcards for Kids | Learn ABCD & First Words | For Babies & Toddlers | RV App Teacherflix 3 Views • 7 months ago

✏️ This fun ABC flashcards for toddlers will teach the letters of the alphabet in a fun and easy way! ✔️ Kids will be able to sing along with Lucas, Brody, Lilly, and Ruby and learn all 26 letters in no time, all thanks to beautiful animations, catchy educational video and easy to understand examples.

📖 ABC Flashcards for babies and toddlers is a great educational tool for learning the English alphabet ABCD. A to Z learning becomes more enjoyable for toddlers, preschoolers, and kindergartners thanks to adorable visuals and bright flashcards. 🎯 Children learn best with visual examples, images, and fun music, and that's exactly what this alphabet flashcards video delivers!

🚀 Help your child learn their ABC with flashcards that show pictures of objects and spelling. This educational flashcards for toddlers video features kids' favorite game characters 🦁 Lucas & friends, which makes learning all the more fun! 🤩

⦿ Learn Alphabet A to Z:

00:00 Lucas & Friends Intro
0:16 A - Acorn, Angel, Ankle, Arm, Arrow, Award
0:59 B - Balloon, Bear, Biscuit, Book, Broccoli, Butterfly
1:41 C - Cake, Camel, Cap, Caterpillar, Coconut, Cookies
2:26 D - Deer, Diamond, Dish, Door, Doughnut, Dove
3:07 E - Earrings, Earth, Egg, Elbow, Elephant, Eraser
3:50 F - Fan, Feather, Flag, Flamingo, Flute, Football
4:38 G - Gate, Gift, Girl, Glass, Gloves, Grass
5:24 H - Hammer, Hamster, Hand, Hat, Heart, Hippo
6:10 I - Ice cream, Igloo, Ink, Insect, Instrument, Island
6:52 J - Jacket, Jaguar, Jar, Jersey, Jet, Juice
7:29 K - Kangaroo, Kick, Kid, Kitten, Knee, Knife
8:12 L - Ladybug, Leg, Leopard, Lettuce, Lollipop, Lotus
8:55 M - Mat, Mirror, Mosquito, Mouth, Muffin, Mug
9:38 N - Nail, Napkin, Neck, Net, Noodle, Nurse
10:19 O - Oak, Ocean, Oil, Olive, Orchid, Ox
11:00 P - Panda, Peach, Penguin, Pig, Pot, Pumpkin
11:42 Q - Quail, Quarter, Queen, Queue, Quill, Quinoa
12:24 R - Rain, Rainbow, Rattle, Reindeer, Robot, Rocket
13:08 S - Sandwich, Shark, Ship, Snail, Snowman, Swing
13:50 T - Telephone, Television, Toast, Towel, Toys, Turtle
14:32 U - Ukulele, Umbrella, Unicorn, Unicycle, Uniform, Urchin
15:13 V - Van, Vase, Vegetables, Violin, Volleyball, Vulture
16:03 W - Waffle, Wallet, Walnut, Watch, Well, Window
16:40 X - X-Mas tree, X-Ray, Xylophone,
17:11 Y - Yacht, Yak, Yarn, Yogurt, Yolk, Yo-Yo
17:54 Z - Zebra, Zebu, Zeppelin, Zero, Zipper, Zoo

✔️ This video is available in ultra HD 4k for the highest possible video and audio quality. It stars everyone's favorite animated buddies, 🦁 Lucas & friends, and it's family-friendly, so everyone can enjoy it! 🕺

⭐ RV AppStudios is thrilled to add our newest educational video for kids to our collection! 👍 As always, be sure to LIKE and SHARE this learning video to show more families that it can be easy and fun to learn 🔔 And don't forget to SUBSCRIBE for more free animated sing-along songs, nursery rhymes for kids and educational video by RV Kids! 🔥

🛍️ Official Lucas & Friends Store Now Open - https://shop.rvappstudios.com

📢 Checkout Lucas & Friends Educational Children's Books: https://www.amazon.com/Lucas-F....riends-by-RV-AppStud

🎯 Try our FREE Educational Apps for Babies & Toddlers:
🟡 Google Play: https://play.google.com/store/....apps/dev?id=74300059
🟣 iOS: https://apps.apple.com/develop....er/rv-appstudios-llc
🟢 RV AppStudios: https://www.rvappstudios.com/kidsapp.html

🌟 Fun educational videos for toddlers by RV AppStudios:
🔸 ABC Alphabet for Kids - https://youtu.be/sZicltsIO5o
✏️ Phonics Song For Children - https://youtu.be/8E5NPhGvpq4
🐊 Learn Alphabet for Kids with Animals - https://youtu.be/MZI1izUMLu4
📖 ABC Flashcards for Toddlers - https://youtu.be/p-kAI-qOeJA

Copyright © RV AppStudios

#Educational #KidsLearningVideos #ABCD

🎶 WILD ANIMAL SONG for Kids 🦁🐘🐒 The Wild Inside of You Teacherflix 3 Views • 7 months ago

An educational and fun music video for kids in which they will learn about wild animals that live in different ecosystems such as the river, the savannah, the mountains, and the jungle. Through a catchy melody and easy-to-follow lyrics, little ones can learn about animals such as lions, elephants, giraffes, monkeys, crocodiles, gorillas, zebras, tigers, rhinos, bears, and wolves, while having fun singing and dancing.

Lyrics:
Cross the river
Past the bushes
Down the mountain
And through the jungle

Listen closely
Can you hear it?
Hear it calling
The wild inside of you

Who’s that walking by that bush
Looks like it’s just my friend the lion

And look who’s there with those big long tusks
It’s an elephant walking with her kids

Who’s over there?
A giraffe eating a quick snack.

And who’s that swinging through the trees
It’s a monkey exploring the jungle

[They go]

Cross the river
Past the bushes
Down the mountain
And through the jungle

Listen closely
Can you hear it?
Hear it calling
It’s the wild inside of you

Who’s that slipping through the river so slowly?
That's my prehistoric friend, the crocodile

Someone's chomping on some leafy greens
That’s the gorilla, my strongest friend

Who’s that striped fellow roaming wild and free
That’s my friend, the caring zebra

Who’s that prowling softly through the jungle?
It’s a tiger walking through the night

[They go]

Cross the river
Past the bushes
Down the mountain
And through the jungle

Listen closely
Can you hear it?
Hear it calling
It’s the wild inside of you

Who’s that stomping on the dusty trail
He has a horn, the rhinoceros

Who’s that smelling that beehive there?
It’s my fuzziest friend the bear

Can you hear them howling loud?
That’s my friend the wild, wild wolf

Look at the animals
They're living free
Can you hear them calling?
Can you hear them call?

[They go]

Cross the river
Past the bushes
Down the mountain
And through the jungle

Listen closely
Can you hear it?
Hear it calling
It’s the wild inside of you

Hmmmmmmmmmmmm

This song is ideal for pre-school and elementary school, perfect for fostering a love of nature, knowledge of wildlife, and stimulating auditory memory and body expression.

Thanks for visiting us! If you want your children to smile and learn, subscribe! :D

If you like our videos, download Smile and Learn now. You’ll discover thousands of activities for children aged 3 to 12 years, all designed by educators. We have hundreds of games, interactive stories and videos in five languages: English, Spanish, Portuguese, Italian, Turkish and French. Try a month for free and start the adventure!

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¡Canta y Baila con las Canciones Más Divertidas del Zoo! 🐒🎶 | Canciones del Zoo - El Reino Infantil Teacherflix 5 Views • 6 months ago

App El Reino Infantil: https://apps.apple.com/app/apple-store/id6738311216?pt=127376275&ct=Youtube%20-%20Es&mt=8
SUSCRIBETE AQUÍ: https://bit.ly/3B8CNXP

#ElReinoInfantil #CancionesDelZoo #Zoo

🎬VIDEOS:
00:04 Soy una Serpiente
02:11 Las Ruedas del Autobús
04:00 El Baile de los Animales
06:50 Adivina
09:20 Rita la Jirafita
11:47 Dante ¿Dónde Estás?
13:51 Juguemos minetras Mario no está
16:40 Hoy hay campamento
19:17 La Pata se lastimo la pata
21:54 Escondidas por el Zoo
24:32 Mi Tío Mario Veterinario
26:30 Se Tropezó el Hurón
28:52 Yo Quiero Caminar
31:48 La Patita Se Enfermó
33:24 Fui Al Mercado
35:55 El Pingüino Lalo
37:54 Súper Disco Chino
39:42 El León Vegetariano
41:54 Estatua
43:39 Juguemos En El Zoo
46:01 El Monito Tico
48:52 Hiporopopó
51:04 El elefante pa`lante
56:43 El Semáforo (Que Merengue)
59:01 Los Bomberos Van de Prisa
01:00:57 La Mancha Loca
01:03:57 El León Es Bueno
01:06:26 Tengo una hormiguita en la patita
01:08:59 Una vez un león
01:10:58 La Pantera
01:12:52 Canción de la Jirafa y la Foca

Más contenido y diversión en nuestras redes sociales:
🤩🎶TikTok - https://www.tiktok.com/@elreinoinfantil
😍📸Instagram - https://www.instagram.com/reino_infantil/
😂👨‍👩‍👧‍👦Facebook - https://www.facebook.com/ElReinoInfantil
💚🎶Spotify - https://open.spotify.com/intl-....es/artist/6EMoWayH9W
💜🎵Deezer - https://www.deezer.com/es/artist/12452336
🍎🎧Apple Music - https://music.apple.com/us/art....ist/el-reino-infanti
🥳🌟El Reino Infantil - https://www.elreinoinfantil.com/

Vídeos que no te puedes perder:
🌟¡LO MEJOR de El Reino Infantil!🌟 https://www.youtube.com/playli....st?list=PL2KQv6-I8Mw
🎆¡NUEVAS CANCIONES del ZOO 🎆 El Reino Infantil - https://rebrand.ly/Nuevas-Canciones-del-Zoo
🎶 CANCIONES DEL ZOO 6 ⭐️ EL REINO INFANTIL - https://rebrand.ly/Canciones-del-Zoo-6
🐄 LA VACA LOLA REMIX - https://youtu.be/ZWbumjPEOd0
🐦 Bartolito REMIX - https://youtu.be/tH5nLQvF0UY
✨😍 TOP 50 MEJORES CANCIONES de EL REINO ✨😍 - https://rebrand.ly/TOP-50-MEJORES-CANCIONES-ERI

¡Canciones, episodios, mix y mucha diversión! El Reino Infantil es el canal donde los más pequeños podrán disfrutar, bailar, cantar y aprender con las series y contenidos más increíbles. ¡Empieza tu aventura en El Reino Infantil donde los sueños nunca tienen fin! Dale like, suscríbete y activa la campanita para no perderte ninguno de nuestros vídeos.

🦁 En Canciones del Zoo verás a los animales viven libremente cantando, bailando y se divierten todos tanto que no piensan marcharse. Cuidados por el Tío Mario, su veterinario, este zoo-hospital recibe a todo tipo de animales que vienen a curar cualquier dolencia. Casi siempre están también Pedro, Mario, Mía y Teo que cada día vienen de visita en busca de nuevas historias y fantásticas aventuras. ¡Es fascinante todo lo que se aprende de los animales y de lo mucho que sabe el Tío Mario! Le ayudan a investigar, a alimentarlos y juntos aprenden a estar en contacto con los animales y a observar su comportamiento.