A submersible is a small submarine that is transported to operation areas by surface vessels or larger submarines. One of the earliest submersibles was the bathysphere, a metal ball lowered by cable from ships that American scientists Beebe and Barton used to descend 900 meters off Bermuda in 1931. The bathyscaphe, a diving craft controlled underwater unlike the bathysphere, was developed by Swiss scientist August Piccard between 1946-1948 and descended to 4000 meters off Senegal in 1954. ROVs are remotely operated robot submersibles controlled from ships with video and computers to find objects like the Titanic, which was discovered by Argo-Jason in 1985.
This is a presentation outlining the beginnings of Amateur radio in the early 1900s to the present day. There are 37 slides from the the Spark era to the rise of the internet within our hobby. Anyone is welcome to use any of this material if they presenting a similar talk.
This is a presentation outlining the beginnings of Amateur radio in the early 1900s to the present day. There are 37 slides from the the Spark era to the rise of the internet within our hobby. Anyone is welcome to use any of this material if they presenting a similar talk.
By Kevin H a rd y an d Ian KoblickFollowing the theme o .docxclairbycraft
By Kevin H a rd y an d Ian Koblick
Following the theme o f manned undersea habitats, outposts to explore, work and live in the sea, we continue the series with an
excerpt fro m Dr. Joseph M aclnnis’s informative March 1966 Scientific Am erican article “Living under the Sea”.
Ed Link’s Submerged Portable
Inflatable Dwelling (SPID)
By Dr. Joseph B. M a c ln n is
Adapted from
SCIENTIFIC AMERICAN,
March 1966
I
n 1956 Edwin A. Link, the inventor of the Link
Trainer for simulated flight training, was engaged in
undersea archaeological investigations. He recognized
that a diver could work more effectively at substantial
depths if he could live there for prolonged periods instead
of having to be decompressed to the surface after each
day’s work. Link set out to build a vehicle that could
operate as an underwater elevator, a diving bell and a
decompression chamber. The “submersible decompression
chamber” (SDC) he designed is an aluminum cylinder
11 feet long and 3 feet in diameter [see Figure 2], With
its outer hatches closed it is a sealed capsule in which a
diver can be lowered to the bottom. On the bottom, with
the internal gas pressure equal to ambient water pressure
and the hatches open, the SDC serves as a dry refuge from
which the occupant can operate as a free diver. Then, with
the hatches again closed, it becomes a sealed chamber in
which the diver can be decompressed safely and efficiently
on shipboard or during his ascent to the surface. An inner
hatch provides an air lock through which someone else
can enter the chamber (or pass food and other supplies
into it) during the decompression phase.
Early in September 1962, the SDC underwent its
critical test in the Mediterranean Sea off Villefranche on
the French Riviera. A young Belgian diver, Robert Stenuit,
descended in it to 200 feet and lived there for 24 hours,
swimming out into the water to work and returning to rest
in the warm safety of the pressurized chamber. When the
time came to return to the surface, Stenuit did not have
to face hours of dangling on a lifeline or perching on a
platform, decompressing slowly in the cold water. Instead
he sealed himself into the chamber, was hoisted to the
deck of Link’s research vessel, the Sea Diver, and there was
42 The Journal of Diving History First Quarter 2016, Volume 24, Number 86
Figure 1: An underw ater dwelling called the SPID (fo r "subm erged, portable,
inflatable dw elling") was designed by Edwin A. Link as a base o f operations
fo r long dives to the continental shelf, here undergoing a pressure te s t at
70 feet. In the sum m er of 1964 tw o divers occupied the SPID fo r tw o days
at 432 feet below the surface.
HATCH
(OPEN)
Fig u re 2: Two chambers used in the Man in Sea 43 2 -fo o t, tw o-day dive are diagram m ed. The "subm ersible decompression
chamber," or SDC (le ft), is an alum inum cylinder II-fe e t long and 3-feet in Diameter. With the hatches open and the inside gas
.
US Navy in WW II; session v, Battle for the AtlanticJim Powers
America begins her major role in the war by opposing the submarine menace, long before Pearl Harbor. This session looks at how antisubmarine warfare evolves. Without victory in this phase, the Allies could not have defeated Hitler.
http://marcusvannini2012.blogspot.com/
http://www.marcusmoon2022.org/designcontest.htm
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Talk sponsored by Historic Port of Washington group for 2016 Washington Marine Market on the downtown waterfront. Lecture held at the NC Estuarium on Water Street. 22 slides reviewing Age of Sail from 16th c. to early 20th c. with a focus on maritime history of Washington Second speaker was Rick Zablocki on the Pamlico Age of Steam (his slides not included here but hopefully will be at a later date on the hpow.org website). .
Improving profitability for small businessBen Wann
In this comprehensive presentation, we will explore strategies and practical tips for enhancing profitability in small businesses. Tailored to meet the unique challenges faced by small enterprises, this session covers various aspects that directly impact the bottom line. Attendees will learn how to optimize operational efficiency, manage expenses, and increase revenue through innovative marketing and customer engagement techniques.
Kseniya Leshchenko: Shared development support service model as the way to ma...Lviv Startup Club
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Kyiv PMDay 2024 Summer
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Youtube – https://www.youtube.com/startuplviv
FB – https://www.facebook.com/pmdayconference
RMD24 | Debunking the non-endemic revenue myth Marvin Vacquier Droop | First ...BBPMedia1
Marvin neemt je in deze presentatie mee in de voordelen van non-endemic advertising op retail media netwerken. Hij brengt ook de uitdagingen in beeld die de markt op dit moment heeft op het gebied van retail media voor niet-leveranciers.
Retail media wordt gezien als het nieuwe advertising-medium en ook mediabureaus richten massaal retail media-afdelingen op. Merken die niet in de betreffende winkel liggen staan ook nog niet in de rij om op de retail media netwerken te adverteren. Marvin belicht de uitdagingen die er zijn om echt aansluiting te vinden op die markt van non-endemic advertising.
VAT Registration Outlined In UAE: Benefits and Requirementsuae taxgpt
Vat Registration is a legal obligation for businesses meeting the threshold requirement, helping companies avoid fines and ramifications. Contact now!
https://viralsocialtrends.com/vat-registration-outlined-in-uae/
LA HUG - Video Testimonials with Chynna Morgan - June 2024Lital Barkan
Have you ever heard that user-generated content or video testimonials can take your brand to the next level? We will explore how you can effectively use video testimonials to leverage and boost your sales, content strategy, and increase your CRM data.🤯
We will dig deeper into:
1. How to capture video testimonials that convert from your audience 🎥
2. How to leverage your testimonials to boost your sales 💲
3. How you can capture more CRM data to understand your audience better through video testimonials. 📊
At Techbox Square, in Singapore, we're not just creative web designers and developers, we're the driving force behind your brand identity. Contact us today.
Falcon stands out as a top-tier P2P Invoice Discounting platform in India, bridging esteemed blue-chip companies and eager investors. Our goal is to transform the investment landscape in India by establishing a comprehensive destination for borrowers and investors with diverse profiles and needs, all while minimizing risk. What sets Falcon apart is the elimination of intermediaries such as commercial banks and depository institutions, allowing investors to enjoy higher yields.
Implicitly or explicitly all competing businesses employ a strategy to select a mix
of marketing resources. Formulating such competitive strategies fundamentally
involves recognizing relationships between elements of the marketing mix (e.g.,
price and product quality), as well as assessing competitive and market conditions
(i.e., industry structure in the language of economics).
Digital Transformation and IT Strategy Toolkit and TemplatesAurelien Domont, MBA
This Digital Transformation and IT Strategy Toolkit was created by ex-McKinsey, Deloitte and BCG Management Consultants, after more than 5,000 hours of work. It is considered the world's best & most comprehensive Digital Transformation and IT Strategy Toolkit. It includes all the Frameworks, Best Practices & Templates required to successfully undertake the Digital Transformation of your organization and define a robust IT Strategy.
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𝐓𝐉 𝐂𝐨𝐦𝐬 provides unlimited package services including such as Event organizing, Event planning, Event production, Manpower, PR marketing, Design 2D/3D, VIP protocols, Interpreter agency, etc.
Sports events - Golf competitions/billiards competitions/company sports events: dynamic and challenging
⭐ 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐝 𝐩𝐫𝐨𝐣𝐞𝐜𝐭𝐬:
➢ 2024 BAEKHYUN [Lonsdaleite] IN HO CHI MINH
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➢ Korean Vietnam Partnership - Fair with LG
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This 60-minute webinar, sponsored by Adobe, was delivered for the Training Mag Network. It explored the five elements of SPARK: Storytelling, Purpose, Action, Relationships, and Kudos. Knowing how to tell a well-structured story is key to building long-term memory. Stating a clear purpose that doesn't take away from the discovery learning process is critical. Ensuring that people move from theory to practical application is imperative. Creating strong social learning is the key to commitment and engagement. Validating and affirming participants' comments is the way to create a positive learning environment.
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4. The bathysphere was built by Americans William Beebe and Otis Barton. On 11 June 1931 they used it to descend 900 m off the coast of Bermuda.
5.
6. The first bathyscaphe, the FN RS 2, was developed by Swiss scientist August Piccard between 1946 and 1948. An improved version, the FNRS 3, descended 4000 m off Senegal on 15 February 1954.
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