hints for professional and public speaking robert jedicke 23 june 2009
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Hints forProfessional and Public
Speaking
Robert Jedicke23 June 2009
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Qualifications
• 30+ years of public speaking– Hundreds of public talks to schools, rotary,
conferences, astronomy clubs, etc.– Keynote speaker– Many TV, radio, newspaper interviews– examples
• http://www.ifa.hawaii.edu/videos/EinsteinSanta480.shtml• http://www.ifa.hawaii.edu/videos/KillerAsteroids.shtml
• 20+ years of professional speaking• Former Friends of IfA faculty
coordinator
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Preparation
• Well in advance• Practice by yourself• Practice in front of others• Target your audience
– Do not ‘dumb down’
• Review & practice immediately before giving the talk
• Show up early to address technical issues
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Preparation
• Do NOT use all your time• Aim to finish early• Public and professional talks
are not so different– ‘experts’ on your topic are hard to
find
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Presentation
• Dress appropriately• Do not move around• Do not fiddle• Do not same ‘ah’ and ‘um’• Look towards the audience• Do not overuse a pointer
– Try to make your talk pointer-less– Have arrows & highlights appear on screen
• Use a remote clicker
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Presentation
• Spend MOST of your time on introductory material– Setup the problem/issue
• Outlines are over-rated– They take time, add little
• Use a microphone!– Preferably a headset– You want to be heard by everybody– You do not speak as loud as you think you
do
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Presentation
• NEVER apologize– takes time– highlights your failures
• NEVER bullshit– If you don’t know something, say so
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Creating slides (layout)
• Think about layout• Use a consistent style throughout
talk• Maximize screen size• Remember that lowest part of
screen is often difficult to see• Use simple background• Use simple/consistent slide
transition• Do not over use color text
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Creating slides (text)
• Use large, simple text and font• Use consistent font throughout• Minimize text
– People read rather than listen– Nobody is going to reference
or read your talk
• Minimize text per slide• Animate text so people read
what/when you want
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Creating slides (text)
• No strange line breaks• Do not read off the screen
– Read off your laptop while facing audience
• Use images on most slides to highlight text
• Use x% transparent text background for overlays
• USE AUTOMATIC SPELLCHECKING!!!
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Creating slides (images)
• Maximize images on each slide– E.g. put text on image
• Maximize relevant part of image– Irrelevant parts can be off screen
• Think about layout!• Use borders• They can overlap!
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Creating slides (figures)
• Maximize figures on each slide– E.g. put text on figure– Place other figs/images on top
• Think about layout!• Use borders
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Creating slides (animation)
• Do not abuse slide animation– Use it appropriately and effectively
• Use movies/animations– Make them part of the animation
sequence so you do not have to click on them
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Public speaking
• Minimize equations• Avoid figures
– Especially log axes!
• Avoid metric units• Avoid exponential notation
– Write out all the digits
• Use comparison scales– E.g one-millionth human hair width
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Professional Talks
• Reference figures– But do not make it distracting
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Documentation
• Keep a record of the origin of images, figures, text, etc in the text section associated with the slide
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Examples
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Connecting the First Nanoseconds to the Origin of Life
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Stars forming at z=10!
Simulation As observed through 30-meter telescope R=3000, 105 seconds,Barton et al., 2004, ApJ 604, L1
1 Mpc (comoving)
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Simulated
1 Mpc (comoving)
As observed through 30-meter telescope R=3000, 105 seconds,Barton et al., 2004, ApJ 604, L1
Star formation at z=10
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Exploring other solar systems
Artist conception of planetary system orbiting around 55 Cancri using results of radial velocity Keck observations
More than 100 planetsaround other starsdetected so far (“indirect” technique-very small periodicspectral line shifts indicate orbital motion)
Most planetary systemsvastly different fromSolar System
No direct images ofother planetary systemsso far
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Artist conception of planetary system around 55 Cancri
More than 100 planets already known around other stars
Exploring other solar systems
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GSMT Detection of 55 CnC b/cChemical composition ofAtmosphere of 55 CnC b
Sudarsky, Burrows& Hubeny, 2003
55 Cancri – physical characterization by spectroscopy
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Sudarsky, Burrows & Hubeny, 2003
55 Cancri
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The physics of giant exo-planets
Goal: Image and characterize exo-planets – Mass, radius, albedo– Atmospheric structure– Chemistry physics of giant planet formation repercussion for formation of terrestrial
planets, life on terrestrial planets– Rotation– “Weather”
Measurements: R~ 10 photometry & R ~ 200 spectra– Near-infrared (reflected light)– Mid-infrared (thermal emission)
Role of GSMT: Enable measurements via– High sensitivity– High angular resolution
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Physics of giant exo-planets
Goals:massradiusalbedoatmospherechemistryrotationweather
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Physics of giant exo-planets
Measurements:near-infraredmid-infrared
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Physics of giant exo-planets
GSMT:high
sensitivityhigh
resolution