The process of manufacturing lumps of glass into sophisticated mirror systems in the world's largest telescopes.



Physics - Universe - Learni

ng Points.

Mirrors are made from glass, which is melted and
spread...

Sounds can vary greatly: extremely quiet or deafeningly loud, high and shrill to low and booming. Why are they so different? Physics - Waves - Learning Points. Sound is a vibration passed to and fro along particles forming a wave. It can...

How a unique but simple experiment in the 19th century gave a new insight into the behaviour of sound waves. Physics - Waves - Learning Points. The Doppler Effect is when the pitch of a sound seems to change as it moves past. The...

We create a Rubens\u2019 Tube to demonstrate the movement of sound waves. A tube lined with holes is filled with propane and connected to a speaker. We light the gas coming from the holes and play different frequencies and volumes of...

We use a sounding board called a sonometer to investigate how the pitch of sound changes when the length of wire being plucked changes. We change the position of a moveable bridge to change the length of the wire and discover that...

Born out of research into RADAR in World War Two, ultrasound has become one of the most important medical inventions. What is it, and how does it work? Biology - Being Human - Learning Points. Ultrasound was developed by Ian Donald in...

Hear sine waves as sound, and discover the equations that describe them: and the effect of increasing or decreasing the variables of amplitude and frequency. Maths - Shape A Twig Math Film. Reinforce and extend the learning required by...

What is it? ... It's a piano!
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Physical processes - Sound -
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hanging pitch


A Twig Tidbit Film - Big Reveal. The image zooms out from an extreme close-up to full frame. The children have to guess...

What's that noise? ... It's a marsh frog. <br<b<br/>r/>/>


Physical p<br<b<br/>r/>/>rocesses -Sound - Changing pitch


A Twig Tidbit Film - W<br/>hat’s that noise? The children have to identify an object from its
sound alone.

Find out how musicians tune their instruments.
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Physical processes - Sound -
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Learning Points
Pitch depends on the frequency of sound waves


– the number of waves per...

Six different clips are shown, two of these are examples of high-pitched sounds ... can you spot them?
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Physical processes - Sound -
C

hanging pitch


A Twig Tidbit Film - Spot the Difference. The...

Explore the groundbreaking life of Walter Tull, one of the first Black professional footballers in England and the first Black combat officer in the British Army. Learn how he broke barriers both on and off the field.<br/>

Explore the journey of Erik Weihenmayer, a blind adventurer who defied expectations by climbing the tallest peak on every continent.

Body Language Habits that Hurt Your Credibility Top 10. Avoid these bad nonverbal communication habits so you don't undermine your own credibility.

Discover the incredible, forgotten stories of Arthur Wharton and Walter Tull - Britain's first Black professional footballers!

From record-breaking sprinter to pioneering goalkeeper, Arthur Wharton's journey will amaze you....

Jump into 'What Is Wavelength And Frequency?' to see how waves move and groove! Perfect for curious kids on a quick, colorful science adventure.

Delve into the intriguing lives of honeybees and discover the secrets behind their remarkable abilities. From their unique physical characteristics to their impressive flying skills and defensive mechanisms, honeybees continue to...

Discover the characteristics of sound waves, including wavelength, frequency, and pitch. Learn about the Doppler effect and its impact on sound perception. Explore how acoustics influence building design and sound...

Have you ever wondered what the most difficult sounds and words are to pronounce? In this video I’ll show you my work with several students as they try to improve their pronunciation of difficult American English words. You’ll see how...

Study the American accent as I discuss my husband’s day with him. Your listening skills will improve as you go in-depth with this analysis of American English pronunciation.

Stress is a critical part of learning how to speak American English. How stress (or don’t stress) words can completely change the meaning of a sentence. In this video we’ll use a real-life conversation to break down the aspects of how...

Want to know how to make the American accent? I’ll show you in this video! AND you’ll see some of my real-life students working on their accent as well. This video looks at one of the most powerful and immediate changes you can make to...

THE OLDEST MAN EVER TO PLAY PROFESSIONAL FOOTBALL TOOK TO THE PITCH RECENTLY IN GUADALAJARA, MEXICO'S SECOND LARGEST CITY. THE 71-YEAR-OLD SALVADOR "CHAVA" REYES, WHO SCORED OVER 120 GOALS FOR THE CLUB DURING HIS CAREER IN THE 1950S AND...

THE GERMAN NATIONAL TEAM ARRIVING TOGETHER, BUT THIS TIME ITS NOT FOR A MATCH OR EVEN A TRAINING SESSION. THOUGH THE TEAM IS PREPARING FOR THE EURO 2008 TOURNAMENT, THE PLAYERS HAD COME TO RECORD A PROMOTIONAL FILM FOR THEIR SPONSORS...