SEO report of spacetimetravel.org
Space Time Travel – Relativity Visualized
www.spacetimetravel.org/
Visualization of the theory of relativity: online articles, pictures, movies and paper models by Ute Kraus and Corvin Zahn (Universität Hildesheim ...
Tasks
- Make the site mobile device friendly.
- Avoid using deprecated HTML tags.
SEO
URL
Domain : www.spacetimetravel.org/
Character length : 24
Title
Space Time Travel – Relativity Visualized
Description
Visualization of the theory of relativity: online articles, pictures, movies and paper models by Ute Kraus and Corvin Zahn (Universität Hildesheim, Germany)
Keywords (meta keywords)
speed of light, visualization, relativity, black holes, space time,ray tracing,albert einstein, george gamow
Error! Using “meta keywords” is meaningless in a while.
Error! Using “meta keywords” is meaningless in a while.
Open Graph Protocol
Error! The website does not use the OG (Open Graph) protocol.
Dublin Core
Dublin Core is not used
Underscores in the URLs
Error! Hyphen (-) is a better solution than underscore (_) in the URLs
- http://www.spacetimetravel.org/.. /list_of_sectormodels.html ("Sector Models – Cut-out Sheets")
Search engine friendly URLs
Good! The website uses SEO friendly URLs.
Checking the robots.txt file
There is robots.txt file.
Social
Social Engagement
Linkedin1
Facebook Share0
Facebook Comments0
Content
Doctype
Missing doctype element
Encoding
Perfect! The character encoding is set: ISO-8859-1.
Language
We have found the language localisation: ”en”.
Title
Space Time Travel – Relativity Visualized
Character length : 47
Good! The title’s length is between 10 and 70 characters.
Character length : 47
Good! The title’s length is between 10 and 70 characters.
Text / HTML ratio
Ratio : 31%
Good! The text / code ratio is between 25 and 70 percent.
Good! The text / code ratio is between 25 and 70 percent.
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
|---|---|---|---|---|---|
| 3 | 9 | 3 | 0 | 0 | 0 |
Heading structure in the source code
- <H1> Space Time Travel
- <H1> Relativity visualized
- <H2> News
- <H2> Overview
- <H3> Visualization of special relativity
- <H3> Visualization of general relativity
- <H3> Student lab on relativistic physics
- <H2> Project description and teaching philosophy
- <H2> Miscellaneous
- <H1> Content
- <H2> Visualization of special relativity
- <H2> Visualization of general relativity
- <H2> Model experiments on the general theory of relativity
- <H2> Student lab on relativistic physics
- <H2> Multi-focus contributions
Word cloud
- relativity21
- theory11
- speed9
- relativistic9
- light8
- models8
- visualization8
- teaching8
- general8
- physics7
- site7
- overview7
- gravitational6
- experiments6
- special6
- lab5
- student5
- effects5
- main5
- motion4
- experience4
- see4
- flight4
- waves4
- hildesheim4
- article4
- nearly4
- black4
- new4
- news4
- time4
- travel4
- like3
- part3
- objects3
- copyright3
- detection3
- waveforms3
- corvin3
- everyday3
- deflection3
- zahn3
- kraus3
- hole3
- project3
- university3
- english3
- images3
- visual3
- ute3
- visualizations3
- know2
- einstein2
- contribution2
- life2
- simulation2
- next2
- near2
- articles2
- used2
Keyword matrix
| word | title | descriptions | heading |
|---|---|---|---|
| relativity | |||
| theory | |||
| speed | |||
| relativistic | |||
| light | |||
| models |
Two Word cloud
- relativistic physics4
- hildesheim university3
- corvin zahn3
- gravitational waves3
- black hole3
- experiments on waveforms2
404 Page
The website has a 404 error page.
Flash content
Good! The website does not have any flash contents.
Frame
Good! The website does not use iFrame solutions.
Images
We found 39 images on this web page.
Alternate attributes for the following 28 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.
Alternate attributes for the following 28 images are missing. Search engines use "alt" tags to understand image content efficiently. We strongly recommend fixing this issue.
- http://www.spacetimetravel.org/index_m.png
- gwave16_m.png
- http://www.spacetimetravel.org/galerie_k.png
- http://www.spacetimetravel.org/filme_k.png
- http://www.spacetimetravel.org/list_of_sectormodels_k.png
- http://www.spacetimetravel.org/lizenz_k.png
- http://www.spacetimetravel.org/faq_k.png
- http://www.spacetimetravel.org/bewegung_k.png
- http://www.spacetimetravel.org/fussball_k.png
- http://www.spacetimetravel.org/tompkins_k.png
- http://www.spacetimetravel.org/rad_k.png
- http://www.spacetimetravel.org/sphere_k.png
- http://www.spacetimetravel.org/tuebingen_k.png
- http://www.spacetimetravel.org/aur_k.png
- http://www.spacetimetravel.org/beschleunigt_k.png
- http://www.spacetimetravel.org/relaflug_k.png
- http://www.spacetimetravel.org/reiseziel_k.png
- http://www.spacetimetravel.org/expeditionsl_k.png
- http://www.spacetimetravel.org/wurmlochflug_k.png
- http://www.spacetimetravel.org/licht_k.png
- http://www.spacetimetravel.org/einsteinring_k.png
- http://www.spacetimetravel.org/isl_k.png
- http://www.spacetimetravel.org/xpulsar06_k.png
- http://www.spacetimetravel.org/ssm_k.png
- http://www.spacetimetravel.org/sectormodels1_k.png
- http://www.spacetimetravel.org/aur16_k.png
- http://www.spacetimetravel.org/gwave16_k.png
- http://www.spacetimetravel.org/ejpvis_k.png
Readability
Flesch–Kincaid Grade Level
9.00
Flesch Reading Ease
45.80
Coleman Liau Index
12.00
Automated Readability Index (ARI)
7.20
Dale–Chall Readability
6.40
SMOG Index
11.30
Spache Readibility
5.00
Number of letters
4951
Number of words
956
Number of sentences
112
Average words per sentences
9
Number of syllables
1722
Syllables in words
1697
Average syllables in words
1.80
Number of words in first three syllables
222
Percentage of word / syllables
23.22
Words not in Dale-Chall easy-word list
362
Words not in Spache easy-word list
207
Technologies
Mobile optimization
Mobilnezet ellenorzes - warning
Deprecated HTML elements
Good! No deprecated HTML tags are detected.
Redirection (www / not www)
Good! The web address is accessible only in one version. The version without www is redirected to the version with www.
Deprecated HTML elements
Good! No deprecated HTML tags are detected.
Printability
Suggestion! Unfortunately, no printer-friendly CSS found.
Meta Tag (viewport tag, mobile devices)
Error! The meta tag named viewport is missing.
Speed test
Server response time
The server response time is fast enough.
Loading time
496 ms
Table layout
Error! Avoid using nested tables!
Render blocking resources
Good! No render blocking elements found!
Speed test – Javascript
Javascript
Good! Just a few javascript files are detected on the website.
File size of all javascript files combined
0.00
Javascript minifying
Great! The Javascript files are minified.
Speed test – CSS
CSS
Good! Just a few CSS files are used on this website.
- http://www.spacetimetravel.org/tempolimit.css
File size of all css files combined
0.00
CSS minifying
Great! The CSS elements are minified.
Speed test – Compression
Uncompressed size of the of the HTML
0.00
Gzip compression
Your site uses compression.
Speed test – Browser cache
Browser cache
The browser cache is set correctly for all elements.
Speed test – Images
File size of all images combined
0.00
Image optimisation
All images are optimized.
Links
We found a total of 55 different links.
Internal links: 46
External links: 9
Internal links: 46
External links: 9
External links:
| Link text (anchor) | Link strength |
|---|---|
| Deutsch | |
| Ute Kraus | |
| Corvin Zahn | |
| Institut für Physik, Universität Hildesheim, Germany | |
| www.tempolimit-lichtgeschwindigkeit.de | |
| http://www.facebook.com/.. /&t=Space+Time+Travel&_fb_noscript=1 | |
| https://plus.google.com/share?url=http://www.spacetimetravel.org | |
| http://digg.com/.. /&title=Space+Time+Travel | |
| http://www.stumbleupon.com/.. /&title=Space+Time+Travel |
Internal links:
| Link text (anchor) | Link strength |
|---|---|
| Next | |
| site map | |
| contact | |
| Overview | |
| News | |
| FAQ | |
| http://www.spacetimetravel.org/news.xml | |
| Gravitational Waves: Models and Experiments on Waveforms, Effects and Detection | |
| news archive | |
| Overview visualization of special relativity | |
| Overview visualization of general relativity | |
| Overview student lab on relativistic physics | |
| Project description and teaching philosophy | |
| Gallery – Free Images | |
| Film Index | |
| Sector Models – Cut-out Sheets | |
| Copyright | |
| Frequently asked questions | |
| overview | |
| long table of contents | |
| Motion near the cosmic speed limit | |
| The Ball is Round | |
| Sights that Einstein could not yet see - visualization of relativistic effects | |
| Rolling Wheels | |
| Brightness and color of rapidly moving objects: The visual appearance of a large sphere revisited | |
| Through the city at nearly the speed of light | |
| Visual observations in high speed flight | |
| Accelerated motion | |
| Relativistic Flight through a Lattice | |
| Destination Black Hole | |
| Step by Step into a Black Hole | |
| Flight through a Wormhole | |
| Light Deflection Near Neutron Stars | |
| The "Real" Einstein Ring | |
| Interactive Black Hole | |
| Röntgenpulsare | |
| Four-dimensional ray traycing in a curved spacetime | |
| Sector Models - A Toolkit for Teaching General Relativity. Part 1: Curved Spaces and Spacetimes | |
| Teaching gravitational light deflection | |
| Gravitational Waves: Models and Experiments on Waveforms, Effects and Detection | |
| First-person visualizations of the special and general theory of relativity | |
| Contact | |
| Survey | |
| Ute Kraus | |
| Corvin Zahn | |
| About Us |
Website security
IP
147.172.249.8
External hidden links
Good! No hidden external links found
Looking for eval()
Good! No eval(bas64_decode()) scripts are found
Checking for XSS vulnerability
No XSS vulnerability found
Email encryption
Good! We have not found any unencrypted email addresses.
Icons
Favicon
Error! No favicon is found. Using favicon helps to build a better brand quicker.
Order of Heading elements on mobile by position
- H1 : Space Time Travel, ( 35px from top )
- H1 : Relativity visualized, ( 355px from top )
- H1 : Content, ( 355px from top )
- H2 : Visualization of special relativity, ( 520.40625px from top )
Typos
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