Please login in order to download photos in full size
If you are not registered, please register for free: www.Free-Photos.biz/register
Please note to download premium images you also need to join as a free member..
You can also save the photos without the registration - but only in small and average sizes, and some of them will have the site's watermark. Please simply click your right mouse button and save the image.
Please login in order to like photos
If you are not registered, please register for free:
Sorry, non-members can download up to 1100 full-size photos per month.
It looks like you have used up your limit.
Free members can download an unlimited number of full-size photos - including the premium free photos.
Join as a member today for FREE! - and download the images without limitations:
www.Free-Photos.biz/membership.php
You can also save the images without the membership - but only in small and average sizes, and some of them may have the site's watermark. Please simply click your right mouse button and save the image.
|
This is a premium free photo
This photo was viewed 0 times and was downloaded in full size 0 times.
This photo was liked 0 times
Source page: |
http://commons.wikimedia.org/wiki/File:Falling_ball.jpg |
---|
|
Description |
English: An initially-stationary object which is allowed to fall freely under gravity drops a distance which is proportional to the square of the elapsed time. This image, spanning half a second, was captured with a stroboscopic flash at 20 flashes per second. During the first 1/20th of a second the ball drops one unit of distance (here, a unit is about 12 mm); by 2/20ths it has dropped at total of 4 units; by 3/20ths, 9 units and so on.
To take the picture, the ball - about the size of a tennis ball - was suspended by a short length of black thread and was released as the shutter was opened and the flash triggered. The shutter remained open for the whole of the half-second period, during which time the flash fired multiple times to capture the ball at 1/20 second intervals. Français :
Un objet en chute libre depuis une position fixe parcours une distance proportionnelle au carré du temps écoulé. Cette photo a été prise sur une période de 0,5 seconde avec un flash stroboscopique réglé sur 20 impulsions par seconde. La balle, de la taille d'une balle de tennis, était retenue pas un fil noir sectionne au moment ou l'exposition a commence et ou le flash produisit sa première impulsion lumineuse. Română: Un obiect staţionar lăsat în cădere liberă în câmpul gravitaţional al Pământului. Legea de mişcare este o funcţie de gradul al doilea, poziţia la fiecare moment fiind egală cu pătratul timpului scurs de la începutul căderii. Imaginea a fost expusă timp de 500 de milisecunde, cu un flash stroboscopic, declanşat cu o frecvenţă de 20 de flash-uri pe secundă. În primele 50 ms, mingea cade pe o unitate de distanţă (unitatea de distanţă este de aproximativ 12 mm—distanţa parcursă în 50 ms de un obiect lăsat liber în câmpul gravitaţional al Pământului de la o viteză iniţială de 0 m/s); după ce s-au scurs 100 ms, mingea a căzut 4 unităţi de distanţă; după 150 ms, mingea a parcurs 9 unităţi, şi aşa mai departe. Pentru realizarea imaginii, mingea (de dimensiunile unei mingi de tenis) a fost suspendată cu un fir negru şi a fost lăsată să cadă în momentul începerii expunerii şi odată cu primul bliţ. Aparatul a continuat să expună timp de o jumătate de secundă, timp în care bliţul s-a declanşat de mai multe ori, luminând mingea la intervale de 50 ms
|
Date | |
Source | Own work |
Author | MichaelMaggs |
This is a retouched picture, which means that it has been digitally altered from its original version. Modifications: Dark background replaced with black; scale added; levels & contrast.
|
This image has been assessed under the valued image criteria and is considered the most valued image on Commons within the scope: Object in free fall.. You can see its nomination at Commons:Valued image candidates/Falling ball.jpg. |
Licensing
|
EXIF data: | |
File name | falling_ball.jpg |
---|---|
Size, Mbytes | 0.363236328125 |
Mime type | image/jpeg |
Camera manufacturer | Canon |
Camera model | Canon EOS 20D |
Orientation of image | 1 |
Image resolution in width direction | 240 |
Image resolution in height direction | 240 |
Unit of X and Y resolution | 2 |
Exposure time | 6/10 sec (0.6) |
F number | f / 3.2 |
Exposure program | 1 |
ISO speed rating | 200 |
Exif version | 0221 |
Lens focal length | 23 mm |
Date and time original image was generated | 2007:10:20 09:42:21 |
Date and time image was made digital data | 2007:10:20 09:42:21 |
Shutter speed | 0.736966 |
Aperture | 3.356144 |
Exposure bias | 0 |
Maximum lens aperture | 2.96875 |
Metering mode | 5 |
Color space information | 65535 |
Exif image width | 819 |
Exif image length | 2751 |
Focal plane X resolution | 2886.3636363636 |
Focal plane Y resolution | 2885.8057630736 |
Focal plane resolution unit | 2 |
Exposure mode | 1 |
Software used | Adobe Photoshop CS2 Windows |
While the copyright and licensing information supplied for each photo is believed to be accurate, Free-Photos.biz does not provide any warranty regarding the copyright status or correctness of licensing terms. If you decide to reuse the images from Free-Photos.biz, you should verify the copyright status of each image just as you would when obtaining images from other sources.
The use of depictions of living or deceased persons may be restricted in some jurisdictions by laws regarding personality rights. Such images are exhibited at Free-Photos.biz as works of art that serve higher artistic interests.
PRIVACY POLICY
By registering your account and/or by subscribing to new and newly rated photographs you agree we may send you the links to photos and we may occasionally share other information with you.
We do NOT disclose your personal data.