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You can use any two media objects in this way to create alternative media for the online and PDF versions of your content. When two media subtype objects are included inside a media element, use the for attribute to specify when that object should be displayed.

Media subtypes

Within each <media> element, at least one media subtype is required. The following sections describe how to create the various possible subtype elements.


Some of the image file types and their corresponding MIME types used in Connexions modules are:

  • mime-type="application/postscript"
  • mime-type="image/png"
  • mime-type="image/jpeg"
  • mime-type="image/gif"
This list is not all inclusive. Any image with a valid MIME type can be used in a module.

Embedding images

To embed images in your module, insert CNXML entries similar to the following example into the "index.cnxml" file for your module: <figure id="figure-01"><title>Example Figure</title><media id="figureexample" alt="an envelope with a blue page"><image mime-type="image/png" src="Xenveope-blue-on-blue.png"/></media><caption>A graphic image displayed as a figure.</caption></figure>

The src attribute in the image tag gives the location or source of the image that you want to appear in the module. Afterloading the image file into the 'Files' tab on your module, simply provide the full file name (e.g. " envelope-taller.png ") to specify which image should be used.

The actual display for the previous CNXML example is:

Example figure

an envelope with a blue page
A graphic image displayed as a figure.

Adjusting the size of the image

You can use optional size attributes to control the size of the image displayed in both online and print versions of the content. There are a few things to keep in mind when specifying image sizes in CNXML:

  • Images that are displayed larger than their original size will look fuzzy or grainy.
  • Resizing an image online relies on the web browser to determine how to redraw the image. This can sometimes lead to unpredictable and undesirable results that vary from browser to browser.Whenever possible, resize the image to the desired dimensions before loading the file into Connexions to avoid this problem.
  • It is not necessary to specify both the height and width of an image. If you supply only one of these, the other value will be calculated to preserve the same height-width ratio as theoriginal image. You only need to supply both when you wish to change the shape of the image.
  • You can choose to resize an image for online viewing, printing, or both by supplying the corresponding attributes as described below. Sizes specified for one version have no effecton the other. If you do not supply sizing information, the image will be displayed in its original size by default.

Adjusting the size of an online image

You can adjust the size of the image in the on-line version of your document by using the height and width attributes.

The following code will display the image in its original, default size:

<figure id="element-439"><media id="tajmahal" alt="The Taj Mahal"><image src="TajMahal_medium.jpg" mime-type="image/jpeg"/></media><caption>The photograph of the Taj Mahal in this figure and the following figureswas taken by<link url="http://www.flickr.com/photos/babasteve/">Steve Evans</link>. It is licensed for public use under the Creative Commons Attribution License.</caption></figure>

Questions & Answers

do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
characteristics of micro business
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
what is the actual application of fullerenes nowadays?
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
is Bucky paper clear?
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Do you know which machine is used to that process?
how to fabricate graphene ink ?
for screen printed electrodes ?
What is lattice structure?
s. Reply
of graphene you mean?
or in general
in general
Graphene has a hexagonal structure
On having this app for quite a bit time, Haven't realised there's a chat room in it.
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
many many of nanotubes
what is the k.e before it land
what is the function of carbon nanotubes?
I'm interested in nanotube
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
what is system testing
what is the application of nanotechnology?
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
anybody can imagine what will be happen after 100 years from now in nano tech world
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
silver nanoparticles could handle the job?
not now but maybe in future only AgNP maybe any other nanomaterials
I'm interested in Nanotube
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Ideas and tools for improving connexions modules and collections. OpenStax CNX. Mar 22, 2010 Download for free at http://cnx.org/content/col11184/1.2
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