woensdag 31 januari 2007

Afdaling in de Marianentrog

Jacques Piccard is een Zwitserse oceanograaf. Hij is erg bekend geworden door de diepzee onderzoeken die hij met zijn vader, Auguste Piccard, uitvoerde, in hun zelf ontworpen bathyscaaf (met de naam Triëste). Hiermee is hij afgereisd naar de Marianentrog. Het woord bathyscaaf is gevormd door twee Griekse woorden: bathos (diep) en skafè (sloep). Het luik werd gesloten en de Triëste daalde langzaam de diepte in. Onderwater gedraagt de Triëste zich als een ballon. Er is ballast mee, en brandstof waarmee de bovendekse schroef de bathyscaaf kan corrigeren. De bathyscaaf heeft een maximale daalsnelheid van een meter per seconde. De mannen aan boord noteerden de tijd van vertrek: 8:23 uur 's morgens. Op weg naar het diepste punt van de oceaan.
- 198 meter: Het wordt donker, plankton licht op. De benzine wordt samengeperst naar de bovenkant van de tank door de grote druk van het zeewater, want olie is lichter dan water. De zee wordt buiten donkerblauw.
- 547 meter: Het donkere water buiten koelt de wanden, de kou is binnen voelbaar.
- 3.962 meter: Een groep plankton lijkt op te stijgen vlak langs de ramen van de bathyscaaf, maar dit komt door dat wij dalen. De zee is aardedonker.
- 7.315 meter: De twee onderzoekers passeren de grootste diepte die ooit door de mens is bereikt. Hun daalsnelheid word vertraagt tot 30 cm per seconde. Ook wordt het echolood ingeschakeld.
(Met echolood kun je verticaal de afstand berekenen naar de bodem.)
- 9.906 meter: Ze horen een droog krakend geluid, en ze voelen een schok die de bol doet trillen. Het is een moment vol spanning. Alles blijkt echter normaal te zijn. De afdaling wordt voortgezet.
- 10.820 meter: Door middel van het echolood nemen de mannen de afstand tot de bodem waar die nog maar 92 meter van hun verwijdert is.
- 10.912 meter: De Triëste raakt de ivoorkleurige bodem van de Marianentrog. Dit was de laatste uithoek van onze aarde die nog veroverd kon worden. De manen meten de watertemperatuur: 3 C°. Verder beschrijven ze in de 20 minuten dat ze op de bodem stonden een op een tong lijkende vis, en nemen ze proeven met stromingen en radioactiviteit. Ook wordt er gecommuniceerd met de oppervlakte via een speciale onderwater telefoon die zonder kabel of radiogolven werkt. Tijdens het doorzoeken van de bathyscaaf vinden ze de oorzaak van de schok die het schip deed schommelen: het glas van de ingangssluis is gebarsten toen het door kou samentrok. Ze beginnen met de opstijging die drie uur en tachtig minuten zal duren nadat ze het ballast op de bodem van de trog achterlaten. De reis eindigde met de mooiste ontdekking van die dag: zonneschijn en frisse lucht. Afbeelding: Wikimedia Commons

16 opmerkingen:

Anoniem zei

Mooi bereikt hoor, maar wat hebben we er te zoeken? Om op te stijgen is er ballast achtergelaten... Kunnen we dan nooit eens ergens komen zonder rotzooi achter te laten? (denk ook aan de maan: staat vol met troep van ons mensen)

Anoniem zei

To decorate a classic bedroom with a welcome sight, instead of having a bench, put
in an ornate settee at the foot of the bed. The author has
an immense knowledge on Commercial Interior Design.
This is an excellent bet as is also already acquainted with their work in addition to their style.


Here is my web site :: Interior Decorating Ideas News And Headlines

Anoniem zei

I've attempted for your past 35 several many years to eliminate and Protect OFF my abdomen unwanted body fat. I've attempted nearly every thing from diet plan capsules, personal trainers, each and every diet regime
ever proposed, I at this time pay on two fitness center memberships, at any provided time, and have not had the time for you personally to advantage from the benefits of both
amongst them in more than a yr. I have to state that only stage that aided me loose weight belt hoping the surroundings,
ease together with the availability in the providers getting opened from five:
00a.m till ten:00pm would encourage me to continue to be on track, attend several of the cardio courses, aquatics programs, stage
lessons etc…

Also visit my site: normal weight loss after pregnancy

Anoniem zei

This Bedding Set is made of 100% cotton. They can be used instead of quilts to keep you warm. Bedroom linens and other elements of bedroom furnishing from Bella Notte elevate the beauty quotient of bedroom.

My blog post ... master bedroom design

Anoniem zei

Whenever, there is a special occasion, side tables can be the central point of attraction
of your room and the ideal space to display decorative items.
Save yourself the money and keep what works, changing only the more design-heavy pieces.
DIY centerpieces can be used as guest favors.

Here is my web-site; computer table design for computer shop

Anoniem zei

Toronto wedding decor would never be complete without ribbons.
They have brought new ideas with their innovative mind and some of the professional wedding decorators have
published catalogs, leaflets and website pages. Fresh flowers add a regal touch to your
wedding.

Visit my blog - cheap wedding decor fabric photograph

Anoniem zei

These supported levels were seen as a sign of prosperity in marriage, and were the beginning of the evermore elaborate structural
designs that we see in cake design today. You won’t receive confirmation regarding the table availability instantly.

Apart from, you must make certain what are the
supplies that may be eaten and what are not.



Check out my webpage - cute valentine cake ideas

Anoniem zei

It is a entertaining, but fairly basic project to complete, and you will get lots of
compliments on this special, whimsical decorating thought.
With outside decorations however make sure you use one thing weather proof to safe Xmas Decorations,
including Velcro Christmas Garland Ties. The vacation season
is about spending time with each other, and generating factors to warm your home will only support signify
that in your loved ones.

Feel free to visit my website :: cheap christmas decorations online

Anoniem zei

When decorating youngsters room, you may opt for the blue color because
the basic color, as well as other three key colors because the ornament so as to make distinct
views. Hence, the sofa choose fantastic or poor, comfy or not,
the mood and atmosphere of hospitality will possess a considerable impact.
As the name suggests these blinds originated from the
masterminds from the golden Roman century.

my blog; dining room decorating

Anoniem zei

Use bright decor such as colorful pots and wind chimes to give
your Denver garden character. Garden Decor: Garden Accessories
#5 - Memorial Stones. Using trellises and obelisks will help eliminate those unappealing
views and objects that are often prevalent.

Here is my website small garden ideas flowers

Anoniem zei

Gradually one acquires skill in inventing unusual effects;
but only the adept can go against established rules of art and yet produce
a pleasing ensemble. From a beautiful Modern style, Lyon Oak Glass Coffee Table has sophisticated
glass top with solid wooden legs. Maybe a telescope or binoculars on a tripod will help them see
some of the fantastic sights.

Feel free to visit my web-site - kids study table design

Anoniem zei

Once the outline has been fulfilled, you'll be able to establish the accessible wall space and choose how numerous golf images you ought to get. Commonly, rugs give an economical way for updating rooms. Together with room painting, placement of diverse objects within the room can also be of important concern and must be handled professionally.

Also visit my blog :: Interior Decoration Photograph

Anoniem zei

It's in fact very difficult in this busy life to listen news on Television, so I just use the web for that reason, and take the most up-to-date news.

Feel free to visit my web-site - quantrim tablets

Anoniem zei

Good way of explaining, and nice paragraph to take information on the topic of my
presentation topic, which i am going to convey in university.


Look into my site :: quantrim diet pill

Anoniem zei

I have attempted for the previous 35 numerous a long time to wipe out and Retain OFF my belly undesirable
excess fat. I've attempted just about every thing from consuming approach capsules, personal trainers, nearly every single meals approach ever proposed, I currently shell out on two fitness center memberships, at any provided time, and also have not had the time for you to take advantage of the benefits of each certainly among them in in excess of a twelve months. I have to say that only issue that helped me rapid weight loss diets hoping the atmosphere, ease in conjunction with the availability about the amenities having opened from five:00a.m right up until eventually 10:00pm would motivate me to continue to be on program, attend some of the cardio lessons, aquatics classes, stage classes etc…

Look at my blog ... ways to lose weight fast

Anoniem zei

Excellent weblog here! Also your website loads up fast!
What host are you the use of? Can I get your
associate link for your host? I wish my website loaded up as quickly
as yours lol

Take a look at my web site: any dicount for quantrim