Subjects
Careers
Maths
Chemistry
Biology
English Lang.
History
Energy transfers (a2 only)
Infection and response
Homeostasis and response
Responding to change (a2 only)
Cell biology
Biological molecules
Organisation
Substance exchange
The control of gene expression (a2 only)
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
Show all topics
World war two & the holocaust
Medieval period: 1066 -1509
2m wars and welfare: britain in transition, 1906-1957
1l the quest for political stability: germany, 1871-1991
1f industrialisation and the people: britain, c1783-1885
Britain & the wider world: 1745 -1901
2d religious conflict and the church in england, c1529-c1570
The cold war
1c the tudors: england, 1485-1603
Inter-war germany
2j america: a nation divided, c1845-1877
2n revolution and dictatorship: russia, 1917-1953
2s the making of modern britain, 1951-2007
World war one
Britain: 1509 -1745
Show all topics
22
0
Waves
681
•
16 Jun 2023
•
Zahara Sparkle
@zsparks17
Electromagnetic waves have diverse applications across various fields, with uses... Show more
This page delves into the applications of higher-energy electromagnetic waves, including ultraviolet light, X-rays, and gamma rays.
Ultraviolet light is used in energy-efficient light bulbs. Inside these bulbs, ultraviolet light is created and then converted to visible light by the internal surface, resulting in lower energy consumption compared to traditional bulbs.
Highlight: Ultraviolet light carries more energy than visible light due to its shorter wavelength.
X-rays and gamma rays have significant uses of electromagnetic waves in medicine. They are employed in medical imaging to visualize internal body structures. X-rays are particularly useful for examining bones, while gamma rays can detect cancers.
Example: X-rays can easily pass through soft body tissues but are absorbed by denser structures like bones, making them ideal for diagnosing fractures.
Both X-rays and gamma rays are highly penetrative, allowing them to pass through body tissues easily. This property makes them valuable for medical treatments, particularly in cancer therapy.
Vocabulary: Penetrative - Able to pass through or penetrate substances.
It's important to note that while ultraviolet light is used in sun tanning, it increases the risk of skin cancer and premature aging. This highlights the need for caution when exposed to certain types of electromagnetic radiation.
Definition: Medical imaging - The technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention.
This page explores the various applications of different types of electromagnetic waves, focusing on radio waves, microwaves, and infrared radiation.
Radio waves are primarily used for transmitting radio and terrestrial TV signals. They are received using an aerial and can travel long distances before being absorbed. Radio waves with longer wavelengths can diffract around obstacles like hills, making them ideal for long-distance communication.
Highlight: Radio waves can reflect off the ionosphere, a layer of charged particles in the atmosphere, allowing for very long-distance communication around the Earth.
Microwaves have multiple applications, including food heating and satellite communication. In microwave ovens, the waves are absorbed by water molecules in food, causing an increase in temperature.
Example: Communication with microwaves and satellites is possible because microwaves can pass through Earth's atmosphere without significant reflection or refraction.
Infrared radiation has several practical uses. It is emitted by electrical heaters and used in cooking ovens. How infrared waves heat objects is through easy absorption by the surface of objects, which increases their temperature.
Vocabulary: Diffraction - The bending of waves around obstacles or through openings.
Visible light is utilized in fiber optic communication. Optical fibers, which are thin strands of glass, can transmit pulses of light carrying information for telephone and cable TV signals.
Definition: Fiber optics - A technology that uses thin glass strands to transmit data as pulses of light.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Zahara Sparkle
@zsparks17
Electromagnetic waves have diverse applications across various fields, with uses of electromagnetic waves in medicine being particularly significant. From radio communication to medical imaging, each type of wave in the electromagnetic spectrum serves unique purposes. How infrared waves heat objects... Show more
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page delves into the applications of higher-energy electromagnetic waves, including ultraviolet light, X-rays, and gamma rays.
Ultraviolet light is used in energy-efficient light bulbs. Inside these bulbs, ultraviolet light is created and then converted to visible light by the internal surface, resulting in lower energy consumption compared to traditional bulbs.
Highlight: Ultraviolet light carries more energy than visible light due to its shorter wavelength.
X-rays and gamma rays have significant uses of electromagnetic waves in medicine. They are employed in medical imaging to visualize internal body structures. X-rays are particularly useful for examining bones, while gamma rays can detect cancers.
Example: X-rays can easily pass through soft body tissues but are absorbed by denser structures like bones, making them ideal for diagnosing fractures.
Both X-rays and gamma rays are highly penetrative, allowing them to pass through body tissues easily. This property makes them valuable for medical treatments, particularly in cancer therapy.
Vocabulary: Penetrative - Able to pass through or penetrate substances.
It's important to note that while ultraviolet light is used in sun tanning, it increases the risk of skin cancer and premature aging. This highlights the need for caution when exposed to certain types of electromagnetic radiation.
Definition: Medical imaging - The technique and process of creating visual representations of the interior of a body for clinical analysis and medical intervention.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page explores the various applications of different types of electromagnetic waves, focusing on radio waves, microwaves, and infrared radiation.
Radio waves are primarily used for transmitting radio and terrestrial TV signals. They are received using an aerial and can travel long distances before being absorbed. Radio waves with longer wavelengths can diffract around obstacles like hills, making them ideal for long-distance communication.
Highlight: Radio waves can reflect off the ionosphere, a layer of charged particles in the atmosphere, allowing for very long-distance communication around the Earth.
Microwaves have multiple applications, including food heating and satellite communication. In microwave ovens, the waves are absorbed by water molecules in food, causing an increase in temperature.
Example: Communication with microwaves and satellites is possible because microwaves can pass through Earth's atmosphere without significant reflection or refraction.
Infrared radiation has several practical uses. It is emitted by electrical heaters and used in cooking ovens. How infrared waves heat objects is through easy absorption by the surface of objects, which increases their temperature.
Vocabulary: Diffraction - The bending of waves around obstacles or through openings.
Visible light is utilized in fiber optic communication. Optical fibers, which are thin strands of glass, can transmit pulses of light carrying information for telephone and cable TV signals.
Definition: Fiber optics - A technology that uses thin glass strands to transmit data as pulses of light.
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
You can download the app from Google Play Store and Apple App Store.
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
App Store
Google Play
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE THE SCHOOLGPT. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
